I started with a Sonos 3 in my kitchen. Worked pretty well, but finicky and needed resetting several time. I added an older Sonos 5 to my living room. Same. Then I added a Move. Great when it works but an absolute PITA to keep the system running. I’m forced to use the S1 app because the 5 is too old to use the S2 app but that worked fine until a few weeks ago when something happened with our router and we had to re-establish everything connected to it wirelessly. Alexa, the printer, wireless controlled lamps, and (sigh) Sonos. And it has not worked right ever since.
For a while, the app could find Kitchen and Living room OR Kitchen and Move, but never all three. And now it can’t find anything but kitchen despite a router reset and following the “find lost device” instructions. And I sit here not listening to music AGAIN. I would never in a million years recommend this system to somebody I like who isn’t a fn networking engineer.