I have no dog in this race. But I happened to just read an article this morning comparing the big 3 half ton diesel pick ups. As far as transmission performance it said hands down the Chevrolet and it's 10 speed worked flawlessly. Even though it and Ford share the same genetics because they developed the basic transmission together. I'm not certain but I think it was Car and Driver. Ironically Jim it said both the Chevrolet and Ram weigh less that the Ford and neither use aluminum.