I played it a bit more during lunch, and had a quick go on a few games. It's definitely a step up from the Quest 1 in most ways. Probably the only two annoyances are the IPD setting which works ok, but could have done with a couple of more 'notches', and the FOV which seems a bit less than Quest (though I'm not sure if my prescription inserts might affect this).
I think the reviews saying the audio wasn't better are wrong - it's noticably better, louder with more bass. Not nearly as good as the Index or a set of good headphones, but perfectly acceptable, especially given the convenience of not having to fiddle with headphones.
The black levels are on a par with my Index, which again is acceptable.
Tonight I'll try sideloading Virtual Desktop, and compare it with Oculus Link, and also get some sideloaded games on there - HL1, Castle Wolfenstein, etc.