So I've got 3 units today of 27 GL-850-B:
(Proof)
https://imgur.com/aqYvddc
If anyone intrested in black uniformity ( blb/ips glow ) on these, I've tried my best to reproduce what's seen on the screen with DSLR camera and it's pretty close to what's visible ( maybe slightly more pronounced on photos still ):
https://imgur.com/a/McPKlMb
It's really good in my opinion and so far I'm definitely keeping the units.
A short tl;dr with couple hours usage,
- Fastest profile is literally bad and unusable, creates a lot of inverse ghosting and it just look epicly bad
- Fast however is very pleasing, I am coming from 144hz 1ms TN panel and while LG is not 1ms panel and I need to get used to it, it's very sharp and crisp, overall any type of motion feels solid without ghosting effects.
- White uniformity looks good as well, I did not notice anything major in white balance.
Still need a time with it, but so far i am VERY pleased with all 3 of them.