I've got the Samsung Odyssey G65B 32". Upgraded from a 165Hz IPS AOC AG271QG. So far so good. It's definitely much faster response time and it's so smooth as long as I can maintain the FPS high. Though mainly the colors and contrast stand out the most. I was worried about QC issues but did not notice anything out of whack yet. The only annoying thing which I'll probably never use is the built in Tizen OS to make it work more like a TV. I think that's just unnecessary. I did not even bother to connect it to network.
I had to remember to check the OSD controls to enable 240hz.
Works amazing on Linux with my Sapphire Nitro+ 7900XTX.
Elite Dangerous Odyssey and Diablo IV are my current jams. Full fame amazing-ness.
Upgraded from my 144hz 1440p IPS LED Gigabit and this is really way better for better blacks/space games for certain.
I am also considering switching to Linux. I'm still tinkering with overclocking though so for now I'll stay on Windows but otherwise there's not really any reason.
Also I've noticed I have a stuck blue subpixel in the bottom right corner :( I noticed it when the whole screen went black. It's otherwise not visible over other colours (except red) unless I lean really close in. But on black it's visible from normal sitting position. Normally there's a task bar over it so that's why I didn't notice sooner.