This thread...
http://www.xbimmers.com/forums/showt...t=ride+quality
There are several comments from people saying their X6 is far more comfortable than their X5 (they don't state the year/options of their X5), but several make the same comments that Pex5 is making about their X5. Interesting the only person who says their X6 doesn't ride great is a person without AD.
Pex5, I really think you need to go drive an X6. As crazy as it sounds (and it doesn't make sense to me), it certainly seems like the X6 rides better than the X5 - especially when the X6 has Adaptive Drive (AD).