I have a Valve Index, and for the most part my experience has been really good. I do recommend using an AMD GPU if you are investing in a VR system. I currently have a Nvidia GPU, and the main issue is the lack of async reprojection support.

Lots of games work great, Skyrim VR, Alyx, Contractors, No Mans Sky VR, Boneworks, you name it!

If you have Quest/Quest 2 you can still play VR games on Linux using ALVR.

I did make it to work on my Arch desktop, but the experience is not great as you need a lot of tweaks not to mention better to have Wifi6 and very good GPU/CPU to handle game and high resolution video encoding on top of it as both game and video encoding will eat you FPS.

But once it get connected and works with SteamVR rest works mostly fine.

But it's better to buy Index if you want to play VR games on linux.

Yes, it mostly works (HTC Vive Pro here). It can be janky at times when you have to restart SteamVR and fiddle with the audio output. Also on Gnome you need to use X11, while on KDE it works already with Wayland. Ah and turning off the base-stations via Blootooth doesn't work, so you need to unplug them or use a phone app to turn them to sleep mode.