Thanks for quick reply. The thing is, I have a 4,500lb boat and I was thinking of getting either X5 diesel or MB GL320 diesel. I test drove both of them on the same day, and to be honest X5 is far superior over GL class. I did not want to get a pickup truck (not my thing) or any of the domestic SUV's, but I need something to tow. Also checked out Toyota Sequoia, and Lexus 570, but to go from BMW to one of those...