>>295689424
>high RMA rate 
That's the Index, there's barely been any hardware issues with the Quest as far as I'm aware. Quest and Rift S are probably the best entry level headsets at the moment, but I'd argue that Rift S is still the superior option for for primarily PCVR. WMR is pretty much universally subpar to the Oculus headsets unless you find one for very cheap.

We know very little about the Quest 2 so there's not much to say on it. I don't think it would be a big leap over the Quest though, since Oculus would want to maintain cross compatibility between the two to an extent. On the other hand, the G2 looks like a solid contender to recommend over the Rift S but that will depend a lot on software and tracking performance, so you should wait for reviews.