Drives and handles superbly in comparison to the Mercedes ML350 and Lexus GX470. More features like run flat tires, xenon headlamps, etc., are standard equipment but on the others they are options; nicer looking and zero cost maintenance warranty, the kind of warranty you used to be able to get with a Mercedes.
Active drive and iDrive. Once you understand iDrive it is the same as when you first came in contact with a PC... foreign at first but now you cannot imagine living without a PC and the same applies to iDrive.
Diesel versions (6&8 cylinder), more wheel sizes/rim choices.