I have not used a SB3. I do use Sonos (because the remote is so far superior to other systems with my M kit. The ZP80 (coax digital out) to my 568.2->DSP8000s is stupendous. I have listened extensively to the ZP80 compared to my 596, with and without my 518, and, in my opinion, with music ripped using Apple lossless, the Sonos is at least as good, if not better.

I had previously tried an Apple Airport Express, which was not as good as the 596 (though very good). Sonos takes it a step higher. I can only assume that the Sonos' jitter is low.

Go for it - you won't be sorry.

John

Main system: Cable, Apple TV, HD621, G68D, AC11, 218, DSP7200SE (L+R), DSP3200 (L+R Rear)
2nd system: Cable, Apple TV, MC200, HD621, 568.2, M3100 (L+R)