I have a three room Sonos setup. TheZ120 is used in the den powering two Sonus Faber Concerto speakers with a LaCie 2 TB NAS supplying the music, and a Controller 200. The Sonos is pleasant sounding and fun to use, but not the last word in audio quality. (I use a Cullen Circuits modified Sonos ZP90 attached to a separate DAC in a large stereo for high end sound quality.)

Overall this is a great music maker for everyday use. I especially like using Pandora with the Sonos set-up.

My bedroom uses the S5 with an iPod Touch for a controller.

System setup is easy and it is rare to have any problems. If one develops it is usually remedied quickly. I used tech support once erlyon and they were very responsive.

Highly recommended.