Have the TV a couple of days. Is very satisfied. Have not seen or noticed any artifacts or anything that is rewritten in the home theater. Then I do not starve on grayscale for hours to analyze either of course. Watched some Dolby Vision (with Dolby Atmos audio on the LG SJ9 Soundbar) on Netflix and it was a cool experience. So this is the future. Regular low-resolution broadcasts are no more than ok, but 720p, 1080p and up are a delight.
If you, like me, have a TV in a cold night room in the evenings / nights, it's a good cool side effect to close the TV box / Tivo and the like, so you do not know the TV is on. I needed to double-check that the TV's LED was red, so it could be easy to miss. Will be undoubtedly an oled next time too.