In an old issue of Topgear magazine they have all the car details in the back, with a short summary for each model
X5
Plus - Best in class
Minus - arrogance comes as standard
Still chuckle about that comment every time I see one...
M3's dont have that problem!
All the proper d*ckheads in NZ drive RS4's now anyhow. :-) ....(and now I've, by default become one, by saying that!)
Cheers
stu