I picked up my P605 from Best Buy last Wednesday and so far I'm pretty happy with it. When I ordered it said it was to be available Friday, but it was ready a few days early, which was nice. The box was in great condition and set up was easy. After hearing some of the issues people had from Amazon, I expected the packing to be flimsy but i thought it was pretty decent.
I don't have a calibration video and haven't done much besides play with some of the preset picture options, but the picture quality seems good to me. I had purchased a LG a few weeks ago that I ended up returning because the picture seemed dim. The TCL's picture is nice and bright. I watched some 4k videos on youtube and also watched The Martian on bluray, and both looked great. The ability to pause/rewind live tv using the antenna is pretty nice too. Since there was so much discussion on here about FALD and backlight dimming, etc., I did play with that and took some pictures, which are below. They go in order as follows: Local Contrast off. then low, medium, and high.
I only have a few minor issues with the unit. The sound quality is a bit lacking compared to the TV i'm replacing, though my judgement could be off as I bought a soundbar along with the tv and after using that I can't go back to just using the TV speakers. The remote feels cheap and I'd rather not have the IR or whatever it is that requires me to point it at the TV. I had previously been using a Roku Premiere Plus which seemed to have a more solid remote and I could point anywhere. Related to both of these...the IR sensor appears to be right under the TCL logo under the screen, which prevents me from putting the soundbar there. Like I said, these are minor and more personal preference things.
The one thing I'm still trying to figure out is getting the tv's remote to control the soundbar volume so I don't have to use two remotes. I believe I need to get a soundbar with HDMI and go that route vs. using the digital optical cable. If anyone has other tips feel free to share.