I vote GL - thats cause I just got one. LOL! You'll definitely have more rear seat space/cargo if thats important. As well, the good thing with the GL is the rear seats are electronic and fold flat into the floor at the hit of a button. The Escalade does not fold flat and hence, you have to lug those out for the ample floor space. The square shape of the GL allows for a little more space than the rounded MDX / Audi and X5.

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SOLD - 08 X5 (Titanium Silver w/Black Nevada with all options).