I’ve got a q90T, absolutely gorgeous. Not sure what this motion issue is, I don’t have freesat or now tv and not come across it. If you mainly do gaming and movies I doubt you will either. Some friends of mine have the q80T and are very happy with it.
The Sony did have some 120hz blur issues but looks like that’s been fixed with a firmware update.
I believe many owners are complaining of stutter that produces an image which appears to jump between frames and is much more noticeable for low frame rate content. Both the Samsung Q90T and Q80T score low on this aspect.
The Q90T scored 6.9 and the Q80t scores 6.8. The TV's that do well in this department will score between 7.5 up to 9.3 on the Rting test results.
Not everyone is sensitive to stutter but many unhappy owners on both the UK and USA forums. I believe Vincent Teoh is the only reviewer to talk about the stutter/Judder frame rate issues on the 4K QLED 2020 sets. Pretty much every other reviewer failed to detect these issues.
So I think a lot of owners who are struggling with the frame rate issue are feeling hard done by. They saved their hard earned cash and read the glowing reviews and can't tolerate the stutter in 50Hz broadcast content. I don't believe Samsung have been very helpful in helping customers either which is a shame.
The Samsung Q90T was my first choice but these issues turned me off. I turned my attention to the Sony Xh950 but the blooming and wobbly stand wasn't for me. I hope Samsung fix these issues on the newer Mini LED QN90A and QN85A 2021 sets.. 🤞🏻