Yup I did that and have zero regrets, probably the best gaming/computer decision I've ever made, well except I just went for the TV (refuse to buy any monitor as they are all crap imo and one big rip off now), it's great and the most versatile display on the market now imo
- got true HDR (and the best implementation you will get)
- got 4k
- got 120HZ
@1080p (my most used mode for gaming, 1080P not an issue when you are sitting the required distance of 7/8 feet)
- true blacks even in SDR content (true blacks and an insane contrast ratio makes the biggest difference to IQ)
- less QC issues i.e. no back light bleed or glow issues to worry about
- good price + good warranty
- create a custom 21.9 res for certain games, black bars on top not much of an issue as, blacks are black and the screen size is still massive
No g/free sync but all the above+ the sheer IQ quality of OLED makes up for that, at least for my needs/wants.
Of course, size is an issue but I don't use mine as a monitor, only for gaming and media.