I guess you guys are aware that Dodge has had a six speed auto available with the Cummins since 2007.5. People that have them like them, claim they prefer them to an Allison. I believe Ford's new transmission is a six speed as well.
Not downing the Allison, just informing. Altogether I would think the GM diesel pickups would be the best of the tree if you do much offroading, 1000 pounds lighter, IFS, and less low end torque to get you in trouble.
