Can't comment about the sound quality.
As far as privacy however, I definitely understand people's worry about the mic, but honestly I think it distracts from really looking at the data tracking practices and how much data is collected even without a mic. See [0]
I'm curious about Apple's data tracking, but based on their marketing page alone it definitely feels like they've given it a big consideration and it's not an afterthought. I cannot say the same for Sonos unfortunately. (I assume Google/Alexa etc are worse, but I don't use those, and didn't dig into it).
[0] https://news.ycombinator.com/item?id=24680614