To each his own...,several of my potential buyers were previous X5 owners. Some SUV drivers perfer the ML against the X5, yes the X5 drives better, but the interior is spartan and unattractive. Have you written in the back seats in the X5, not very spacious or useful. Mercedes rear space is more than 2 inches than the X5. Does the X5 have rear heat/AC ? No. Does the X5 have third row seats. no. The ML has foldaway rear seats as well. IF you want a good drivers car get a Porsche., But if you want a UseFul car, get the ML. Plus where I live, most people drive Mercedes because they care what other people think.