I owned an 06 325 and traded if for the 07 X5 because I need towing
capability.

Went for the 08 X5 because I got a good deal.

It puts me in a good position to buy either the 09 or 10 X5 and still have good trade value on the 08 X5.
The dealer like trades with 20,000 miles or less. It works for me.

The only issue I had with the 07 X5 (looks like it is still in the 08)
is wind noise around the upper part of the front doors.

It was a solid auto giving me a combined 19.9 mph over the 20,000
miles.