Well if I can check it out I'll let y'all know what I think. I have NOT driven the new X5 yet but have a 2001 4.4 sport with 20s that I love (the wife drove the new one on our one test drive). I've driven the Cayenne (S), pretty extensively, I prefer my X. Makes for arguments at the local Porsche events believe me. We put both my x and a 2002 Cayenne on the skid pad one day (I'm a PCA DE Instructor) and while they were both great the x was firmer, more direct and better IMO. Most preferred the Cayenne but it was a Porsche event.