I love everything about this unit... Except... and this is kind of a big 'EXCEPT'... but I suffer from occasional audio dropouts. It has something to do with my 3-year old 60" Vizio HD TV sending a Dolby Digital Plus signal that the Sonos system doesn't handle well. So when the signal gets ahead of the Sonos it falls into a "wait" mode where the audio briefly drops out for a second or two. It doesn't happen often. But it's often enough to be super annoying. This could be easily fixed by simply switching the TV's output signal from Dolby to PCM. But, the Sonos only takes Optical audio (no HDMI). PCM can't travel through the optical cable and send true 5.1 surround sound. So it gets squashed down to a stereo signal...which defeats the purpose of blasting a ton of money on a "Hi-Fi" surround system. Note: I also bought the sub and two Play 1's for a 5.1 set-up.
Another annoying thing is the audio is just a tad behind the TV video... it's about a tenth to a quarter second off. My wife doesn't seem bothered by it. But it drives me bananas.
I'm currently working with Sonos tech support for a remedy. Currently, no apparent quick fix is available for me.