I love the system and view it as a perfect compliment to my pool. I have 4 zones at the moment that cover most of the house (except bedrooms) and the patio and pool area. To do the latter right, I had to get a wireless extender that gave good wireless coverage to the pool area. This allows controlling everything from the iphone app (but risks the iphone at the bottom of the spa). The group feature is great, and fills the entire house and outside with music. All my music listening at home is through Sonos now. As well as pandora, slacker, etc., I use it for my entire music library which is stored in a big itunes library on a network drive. Sonos picks it up and plays it almost as easily as itunes does. Very nice system, and a great way to access a digitized music collection. Only downside as mentioned is the price of components. However, if you price against other multi-room systems that usually require tearing up walls and running cable, I decided it was a pretty good deal.