I got a Quest 2 today and I've played around with it. Overall I'm very impressed by it but it's not quite good enough to replace my Rift S on PC, and I'm hoping I can fix the little problems. I got it working wirelessly in FBT with low latency and decent picture quality on my standard BT Hub (router) with 20-35ms latency, using VD (Virtual Desktop).

Good:
>No screendoor
>Better colors and blacks than Rift S
>Sharp and vivid on native apps
>Link/ Virtual Desktop were both easy to set-up and worked great immediately without needing to optimise conditions
>Built in speakers are good - I don't feel the need to plug my headphones in
>Mic is good
>UI is perfectly snappy
>The standard strap isn't as bad as people have claimed. It needs to go over my ears, but it's not particularly uncomfortable. There's a decent amount of pressure on my face, which might be alleviated with a better strap down the road, but it's 'fine'.
>Native Quest VRChat runs shockingly well - see pic related with a low mirror on

Bad:
>There's some glare on the lenses, along with chromatic aberration, when not looking at the center of the screen. However, Rift S also suffers from some of this.
>FBT calibration seems poor - I think the choppiness of SteamVR degrades the quality of the calibration and results in a pretty 'bleh' result
>FBT trackers can get tilted - as in, the whole tracker playspace seems to tilt, so you're left standing at an angle. This sucks - it might have been exacerbated by my spinning. Recalibration in-game is very questionable given the choppiness that I mentioned
>The image is kinda blurry on Link/Virtual Desktop gameplay
>Other issues in VD VRChat, such as gesture getting stuck and controller 'pulse' vibrating very softly for no reason
 
The image quality is noticeably better than RIft S - the main differences being the colors and the lack of screendoor. However, the issues I have with using VD make the Rift S still best on PC - though I hope to be able to fix them.