OK - now for the details behind the pros and cons I previously posted.
So I am likely going to keep this TV for a couple of weeks, give it a chance. So if you want me to view specific content & comment on what I see, and/or post pics of scenes, send me a PM or comment in the thread and if I have the movie or it's on Amazon/Netflix, I'll watch & post for you.
If you are in CT & want to come see the TV, send me a PM. Recommend you come at night so you can see this thing in the dark room. Trust me, you will be utterly stunned by the blacks & the overall performance of the TV. Bring any blu-rays you want to check out.
Now I am going to say some negative things about this TV. Doesn't mean I hate it or Vizio, or any other TV, TV tech or manufacturer. I believe in calling it likes I sees it. This is what my eyes see.
In a nutshell - value: 5 stars; performance: 3.5 stars. The lower performance rating is due to painfully annoying, disappointing & distracting gradients/banding, dirty screen effect & the visible FALD at-work (and cheapy plastic materials). These issues are big in my book - big enough that 4 stars to me is too many. For you, these things may not matter & you'd give more stars.
If your question is, I am upgrading, I do not have a 4K TV with HDR/DV - should I get this TV? I'd say hells-yeah, unless you are likely to be bothered by the issues I describe below. And then, it would still depend on how much you'd be bothered by them.
If your question is, I own the PQ, should I upgrade to the PQX? I'd say - had Vizio fixed the gradient/banding issue & the visible at-work FALD AND those 2 issues truly drove you bat-poo crazy - definitely upgrade. I did not buy the PQ because of those 2 issues so I am REALLY disappointed Vizio did not do more to minimize/fix these issues. Just unacceptable at this life-stage of 4K TVs.
I am not using the TV's speakers - sound comes through my surround sound system. Why bother with the TV speakers. LOL
So far, my experience with the menu interface is fine - i don't find it buggy or laggy. Apps load quickly & nothing about using the interface annoys me. I have not used the SmartCast feature, but I plan to try YouTube (there is no youtube app & no app store on the TV.
Set up was easy & as I stated above, the average person should be able to get the TV out of the box, put on the stand & get it onto your stand. Trying to wall mount this TV by yourself would not be a good idea - the screen feels really delicate. If you lift this TV, do it from the front & bottom - front resting in your palm & fingers around back. Do not press your palm against the glass - you're only using your palm to hold the bottom of the panel & stabilize it while you lift. I did not find the TV too heavy or cumbersome to lift at all.
Overall, the picture quality is pretty amazing if not downright incredible. No "for the money" qualification necessary here, folks - it is what it is: an impressive (for the most part) picture. I truly was stunned by what I saw on the screen. Blacks really are black - deep, inky, get lost in them black. I saw zero flashlighting and no blooming when sitting directly in front of the TV. Black bars are & stay black, even when a very bright object is near the bars. Not only that, when there is shadow detail that needs to be illuminated in a dark scene - which can sometimes cause blooming/zones to become visible - there just wasn't any. Same with bright objects in dark scenes.
If there was a halo, to me it looked to be part of the scene, natural & normal - just like when you see a light or flame in the dark. You don't see the bright object & then black right at the edge - you see a halo, a glow around the bright object. It was so subtle the halo could very well be in the content. I felt like what I was seeing as a halo added realism & a sort-of 3-D view to the object/scene. When you see blooming on this TV it is very apparent it's the backlight because it's slightly blue & well, it doesn't look like part of the scene. So I'm going with - the blooming/halo artifact no one likes is EXTREMELY minimized with this TV, even when FALD is set on high. But you have to sit directly
in front. Even slightly off-axis (10-15 degs) is enough for some blooming to be evident.
I was SQUARELY in the LCD/LED sucks camp, never thinking it could ever match CRT/Plasma. I am stunned by how far this technology has come - and that this is coming from Vizio. I see all of this back & forth LED/LCD vs OLED - please.
LG, Samsung & Sony should be worried - this TV really can, will & should rob them of sales.
Why I did not get a Samsung: no Dolby Vision. I have the Oppo UDP 205 so would be ridiculous to get a TV where I could not use all of its features. If Samsung had DV, I'd have gotten a Q9FN or Q90.
Why I did not get OLED: motion (stutter is just awful), auto brightness limiter, not as bright as LCD/LED; black crush/loss of shadow detail, the "black hole" effect in black content, burn-in risk (watch a lot of news), bluish pallor to whites/grays/silvers. If I don't keep the PQX, I will get the A9.
Why I didn't get a Sony: Just read the reviews of their latest TVs. Too many compromises for my liking. Everyone should be asking "So now that the PQX is out, why Sony again? Because the plastic is better?"
Appearance - sharp. It's a good looking TV - from the front & side. No thicker than the bottom of an OLED where the elecronics are, I'd venture a guess. The metal frame looks great & the edge from the front view is extremely thin - invisible. 1/2" black edge to the screen (pictureless part of the screen) all around which disappears into the room. So basically, this thing appears frameless. It's sharp sharp sharp. Legs are nice - sort of retro-modern look to them. They can't be put on backwards (to face in & have a smaller footprint). Nice added touch - the bottom of the feet have small soft rubber pads to protect your table-top.
I remember reading in the PQ forum folks mentioning a "smell" when they turned on the TV for the first few days/weeks. You get none of that here.
HDR - mind blowing. This is my first view ever of HDR & I get what the hype is all about - and I LOVE IT. Bladerunner 2049 is a must-see/own. Netflix HDR (LOVE/DEATH/ROBOTS) knocked me out. There are a LOT of bright highlights in dark scenes in that program & it was, well... super cool. I was geeking out about it like crazy. The TV even shows it's displaying HDR with small-ish icon in the upper right corner for a few secs. Just set the input to auto-detect & you're done - the TV does the rest.
Haven't watched any DV content yet, but I will.
I am not a gamer/do not have a console so can't comment on input lag.
This TV is bright & for the most part this is a MAJOR advantage & BIG reason to pick this TV over other brands & over OLED. The brightness makes the picture absolutely stunning & life like. (Retinas be damned!) The one drawback & I think this is content dependent (quality of the content/broadcast) is colors can look washed out. This is RARE - only saw it on a few programs & they were older. I kept playing with the backlight & contrast/brightness settings, but as soon as a commercial came on, it was apparent it was the content/program & not the nits/backlight, nor contrast/brightness.
Picture is sharp, detailed. I turned sharpness down to 10 - I think the default is 20. I'd be shocked if this TV did not score high on sharpness test patterns. Did I see a difference - nope. I just feel better that at 10, I am even less likely to be introducing sharpness artifacts into my picture.
Colors - VIBRANT, deep, rich and not at all unnatural, garish or over-saturated. You can make it look like that if you want, but "Calibrated" mode is incredible. ("Calibrated - Dark" is too warm "yellowish" to me.) I am not saying the colors are accurate. I would say, you'd only notice they were not accurate if this TV was side-by-side with a TV that was spot-on perfect. Yet still, it's not like you would say the Vizio is awful in the comparison.
Contrast - this TV defines it for LCD/LED. I don't know what else to say about it - I don't have any test equipment 'cept for my peepers & my peepers were loving it.
Shadow detail: I saw zero evidence of black crush or loss of shadow detail. In fact, I could not believe how details shadow areas/content appears & that it appears so "correctly" on screen. Sometimes when contrast/brightness are adjusted incorrectly, shadow details reveal too much & look washed out - not how shadow detail would really look, or the way the content creator intended. I felt the Vizio did a stellar job in the content I've watched so far. I plan on viewing Harry Potter flicks, From Hell, Sleepy Hollow, The Others, LOTR - see how things look. I'll post comments after I do.
Now for the cons...
Build quality. Laughably bad around back. Looks nice enough - and looks like quality - then you touch it & just laugh out loud. I think if a baby threw its binky at the back panel it might break. Make that a cotton ball. It is really, REALLY cheap, thin flimsy plastic. But at least it's not all wavy or distorted. Thank Megadeth it's the back of the TV & nothing will be hitting it. And not like I am buying the TV for the back. (For comparison purposes - the Sony 930E had a very nice back. My Pioneer Kuro is metal!!)
Gradients/banding. In a word, UGLY. Add another word: DISAPPOINTING. Truly, a SMH moment when you see it on this TV. You really have to wonder how Vizio could ignore all of the reviews & customer comments on this issue & not correct it with their FLAGSHIP TV. Inexcusable. Refer to the pics. The one scene demonstrates how well the TV can perform - you will see very minimal banding at the top of the image - if at all. Other pics, the banding is CLEARLY visible & trust me on this - it looks a lot worse than what you see in the pictures.
FALD doing its job: I was really disappointed when I saw this issue, too. Now, I got it to a point where it's not as bad & I think when the FALD is set to "high", that setting hides it best. I think this is because on this setting, the overall picture is brighter than on "low" or "medium" (low & medium appear to be the same avg brightness level). On low or medium, because the overall image is dimmer, a bright object (or and object only a little brighter than the background) you see the zones switching on & off - but even worse, you see the brighter object brighten & dim as it moves through zones.
This effect is really pronounced in star fields, scrolling credits & again - any bright(er) object panning across the screen against a dark background. "Low" setting on the FALD is, I think, just too aggressive. My backlight is set at 40 (default is 50) & FALD set to "high". With that setting, so far, I have not seen a repeat of this issue & stars all stay the same brightness as the image pans. And crazy enough - space is black & stars are bright. (Amazing, Vizio!)
Another odd & off--putting effect of the FALD - even bright content, you can perceive the backlight working. This happens in abrupt changes in overall image dynamic range (I guess) from a bright scene to a dark scene & vice-versa.
At first, I thought it was my eyes adjusting to the content & the brightness of the TV, but then other people started to notice it when i called it out. And in your peripheral vision, as you're say... looking at the center of the screen - you begin to notice the "zones" making up the area that dimmed. You only see this when it first occurs in a scene change; eventually you adjust to the image & you don't see this effect. It's almost like when you pick up a dim object in your peripheral vision, go to look directly at it & the object disappears - only to reappear when you look away.
Let's say the content you're watching is a night scene. Folks on a walk or talking outside in the dark. The screen abuptly changes to daytime, a shot of the blue sky with white clouds, then sunlit greenery in the center of the image, light colored sidewalk & light colored houses to the left & right of center.
What you will notice is, right after the abrupt dark-to-bright scene change, the new image "dims" ever so slightly in the area that comprises where the trees are. And not only that, you notice (for a split second) this "blocky" appearance to the area that dimmed - you saw the zones where the backlight dimmed a little to render the dark green shiny leaves a little darker than the bright sidewalk, houses & sky/clouds. If this happened fast enough & at the right moment - you wouldnt notice it. But because it lags behind the actual scene change, ever so slightly, you see this effect.
Dirty Screen Effect: while I do not see the vertical & horizontal bands like you get with OLED, DSE is terrible. So bad you see it in a LOT of content when the image pans, not just whites/light grays. Did some checking of Sonys, Samsungs & LGs - all of the reviews mention uniformity/DSE is a problem. I am guessing this is an inherent problem not likely to vary to a great degree between panels. I may try to play the panel lottery here.