I've had the 65" version of this TV for over 2 months now and have been playing with settings with different content such as gaming, online streaming, 3D, Cable TV and blue ray. I do have slight flash lighting in the corners but no clouding. Flash lighting is pretty typical with the edge lit technology. You can minimize it even on movies where you have black bars top and bottom. I think the motion, picture quality and night viewing is superb and happy with the purchase.
Here are a few of my thoughts nothing really in order.
I don't think the vizio comparison was fair.. Its different technologies it's not an apples to apples comparison between the two especially when that event had a biased comparison.
Anyways...My setup consist of cable box > Xbox One > Receiver > TV
Here are the settings I'm happy with and can be different with what other people might like or what content they watch or how equipment is set up. Reason being I have noticed that I like to change the settings based on the quality, source and viewing time.
My general settings where I get no flash lighting are Standard, brightness 34, backlight 3-7 (night time, nice and dark) but change it to 10-15 (daytime when blinds are open. I will notice flash lighting when I go 7+ on backlight or higher than 34 on the brightness), Contrast 90, Eco mode off, Dynamic Contrast LOW (This I feel pops the picture slightly without losing detail in the color gradients any higher I notice the grey bar deviate too much from the true picture), and Dark for the black level ( this I feel makes sure the image source is always getting black in the picture to improve the contrast, any higher and you get black crush), sharpness is set to 40, color 50, Tint I think off the top of my head was 44/56 or somewhere around there. I noticed the set had some slight green hue, so I had to trim that and add some red. I used the TV's blue color filter with some CD calibration tool I downloaded here. For the picture I use Cool (sports) or Warm 1 (movies/TV). I have LED motion off, Cinema Off, Motion rate is set to Clear, HDMI level is LOW. I found that the HDMI level low gives me the best deep blacks especially at night. But I counter it with gamma +3 to bring out any dark shadows in the picture. Reason why is that When I look at cable content I notice that since the Cable HD source quality is lower than that of blue ray or video games the deeper grey/blacks sometimes get lost. The increase in gamma brings it out. However if that is not enough for the content I'm viewing I bring it back to Normal, But that's pretty rare...the content has to be a very low quality such as a poor video stream. The mpg stuff I leave on auto I like it since it makes the picture look better on downloaded movies I view with lower quality on such a big set. Blue Ray or Video game content looks phenomenal and feel like it has a nice color range with HDMI Black Low. I think that's it for my settings.
You have to be careful with the eco and cinema mode settings I turn these off. Since I don’t like for the set to auto dim the picture drastically sometimes when not needed for example in cinema if there is a very dark scene it makes the whole picture even darker when not needed. It’s really depending on what you are watching. I feel with the settings above already do a good job of minimizing flash lighting.
The "smart" features are useless for me just because I have the TV connected to the Xbox one. Plus I think you can find better smart features with a chrome cast or a Roku. I guess it’s a nice touch for users that don't have this at all.
The TV is very thin and looks elegant I like the way it looks. Only complaint is that I didn't buy the TV after the $200 price cut!