AT in the E70 GM or ZF?
 

Might meet higher twing capacity than the X3 so starting to look at the E70. Not new though. Most of interest have a 6 speed but if the GM unit I have in the X3 I would not consider hence the question.

I believe all the E70 X5s use automatic gearboxes sourced by ZF, although different models for different drivetrains.

Definitely ZF.