>>285960102
I would buy it over the Rift S since Oculus decided to not give any love to the Rift S.
The Quest features experimental hand tracking, and the fact that you can use it as a standalone headset is already a bonus over the Rift S.
Wireless VR is great, but if you're going to be using it with your PC, you'll need their link cable or the right type of USB-C cable to run it.
I'm saying you might get more use out of the Quest because of how portable it is.
What I don't like about the Quest as of right now is the dated hardware it is using, I don't think phone hardware was ever a good idea for VR, the Qualcomm SoC in it is very last gen by now.

The new Cosmos might be worthwhile given they plan to support base stations and inside out tracking, not sure if it would be wireless.