I have Sonos and absolutely love it. If you enjoy music and can get past the initial sticker shock, you will not be disappointed. It just works — flawlessly.
Apparently getting multiple zones to synchronize perfectly on a wireless system was a major technological hurdle (despite it sounding simple). The Sonos does it.
If you have an iPhone or a Droid, you can save a few hundred dollars because you will not need a remote controller. The apps for these devices are fully functional and I rarely pick up my controller anymore. If you’ve got an existing stereo system with an amp and speakers, you can save a little by getting the ZP-90 (no amp) instead of the ZP-120.
Sorry this sounds like an advertisement — I just really love this system. My only complaint would be that in the last 5 years, I did have 1 zone player die on me and Sonos wanted a couple hundred dollars to do out-of-warranty repairs. I just bought another instead and sold the flakey one on eBay.