Got mine yesterday. I really like the sound overall, but I haven't tried spatial sound with supported video yet.
I'm really hoping ATV supports spatial sound someday, as that would be a way I would use them. I did use them for ~6 hours teaching online using Google Meet, and they worked really well. I had them in transparency mode for most of the time, and students and my EA said my call quality was really good. I'd listen to the recording, but Meet recordings don't sound great to begin with, so I'm not sure if that's a great measure.
I did check for condensation a couple times, but I never did see it, even after having them on for 3 hours. I'm going to buy AppleCare+ for them, just in case.
I like them enough to keep them, even though the price is a bit painful. I can see them getting daily use.