I like the sound quality of my Echo Dots, so I'd be fine to keep them in "dumb mode" (or even disconnecting their microphones physically), but setting a timer etc. is a useful feature too, when you are running around the house.

How good is the sound of the Home Assistant Speakers and can they be used like bluetooth speakers, too? How about multi room sound?

Any recommendations on a good solution that focusses on that music part and is not likely to be a victim of getting bricked by a software update?