Which one should I get? so hard?

I wouldnt get the Benzo. Too many stories of those ML's breaking down on the way home from the dealership. Quite honestly, I wouldnt get the Toureg either. VW's have reliability issues, the the Toureg isnt a big seller for a reason. But I'd take it by a longshot over the ML. Staying in this cl, there is 1 German SUV that I would buy without hesitation- the Porsche Cayenne, especially now that they have the "S" version out. That gets my hands down vote over the 2 suckers you've picked.