The Niles ICS GXR2 system, though not the newest kid on the block, has performed quite well for me. With their IM-NET Card, you can pipe in all of your music via a NAS drive (Can't recall the specifics of what the NAS drive needs to be running).
The 85W/channel (x12) at 4 ohms is more than enough in my house so I don't have any complaints. Their recent partnership with Elan is interesting, but you need a $1200 Elan G! controller (HC4 or better) if you want to have iPhone control. Otherwise, the portable iRemotes work well.