The LG UF7700 4k LED TV has great smart features and good color accuracy at an angle. However, its picture quality when sitting in front is sub-par, both in dark and bright rooms. The contrast ratio is low, it has a few uniformity issues, and it reflects more light than average.
The main advantage of an IPS panel like the one found in this LG is the color accuracy at an angle. Instead of losing saturation, the picture just darkens when viewed off-axis.
Update 01/06/2017: We have changed the methodology of testing. Since this is an old TV which we don't have anymore, we extrapolated the results from 2016 TVs.
The input lag is high and varied a lot (from 55 to 65 ms). PC, Game, and Expert1 all had the same input lag when TruMotion was off. When TruMotion was turned on, the input lag increased to 113.6ms.
Note: Sound Quality test for TVs reviewed before 2017 was performed at 75dB, 85dB, and Max SPL. Starting 2017, the target SPL levels have been changed to 70dB, 80dB, and Max dB SPL.