After trying out LG's version of this OLED monitor, and subsequently disliking the footprint of the stand, and the stability (it's horrible for most desks!), I opted to try this AOC OLED, which uses the same panel.
You really only miss out on the HDMI 2.1 with the LG and other OLED 27" models similar to this, but, with modern games not entirely supporting it to the fullest yet, and this being a 2K monitor, it's not a big thing.
The risk of burn in is something I will address, as most consumers think it's going to be the biggest factor that keeps them away. I can assure you that this monitor reminds you after 4 hours of use to do a pixel refresh, (after turning it off it also does this, if you ignore the warning and keep gaming as I do), and it offsets the display by a few pixels every minute to keep the likelihood of anything burning in to be low. Just set a screensaver to pop up after a few minutes, and you'll likely never have to worry. On the LG, it was a lot more noticeable with the way it adjusted the screen, this one isn't as noticeable. They do offer a 3 year warranty against burn in included with purchase!
AMD Freesync causes some brightness flicker issues, so I turned it off, and now it's fine. This monitor is around 400 Nits in SDR, and about the same in HDR. I don't care for Windows HDR performance anyways, so I just set it to the SDR. It's a lot brighter than any other monitor I've owned, or at least with pixels being self lit, it feels a lot brighter! I'm in a dark room, and I can't complain.
These monitors are calibrated for SRGB out of the box at the factory, which makes the image look great in my opinion! Better than some of the other ones on the market that you have to mess with out of the box. Text clarity is much better on this monitor VS the LG I tried out.
Another thing to mention is that the stand has a headphone rest to hang them on it, speakers built into the monitor unlike the competition, (which perform alright), 2 HDMI 2.0, 2 DP 1.4, 2 USB 3.0, and a headphone jack. 240Hz and .03 MS response are no joke!
The only downsides are the lack of adjustments being able to be controlled in the monitor menu, and firmware updates not being easy to figure out how to configure/install. 2k/1440p is fine at this size, but, 4k would be even better (not that many people can run 4k/240Hz yet anyways lol).
Overall, for mixed use, movies, cartoons/anime, gaming, photo/video editing, production, if you want one of the best displays on the market, I would highly recommend trying this one first (especially at $799.99!!) I will never go back to LED/LCD!