I can't wait for B&O to come into the rest of BMW's lineup soon, but they really need to lower the price because it is ridiculous. I think the major thing that BMW needs to work on for their Prem. Systems is bass because I've driven so many BMWs and none of them have good bass at all. Even if you turn up the bass, it tends to be harsh.
Audi has a lower-end B&O system in the A4/A5/Q5 and even that (it costs like $750) sounds fantastic. I've heard the one in the A8 and it is tremendous, but for $6k!? Hell no.
2011 X5 xDrive 35d Red/Black: ZCW, ZPP, ZRC, ZTP, 300, 386, 496, 4AB, 6FL, Combox, LED Coronas. 04/11 Production