I bought the X5 in early January 07, was very close to getting the audi Q7, and have owned 3 other audis. But I wanted to try somthing different and glad I did! So far so good! This car is smooth, confident, and looks beautiful! I test drove all the midsize type SUV such as the Acura MDX, Mercedez ML350, Audi Q7 and Porsche Cayenne. I bought the X5 "demo" model so it already had 1000 miles on it. Was a little worried about that but no issues so far and all is covered under warranty.
Excellent handling, commanding views, comfortable interior and seats, lots of cool feature like park assist, sirius radio. Plenty of HP with the engine! Fun to drive.
Do away with plastic bumpers!! Maybe more details in interior like audi does. A little bumpy but I am sure I'll get used to it.