I really like the new 6 spd auto. I am not an auto fan at all. Do to medical reasons I was forced to into one. With that said. The auto shifts great except for the stacked shifts. The stacked shifts do not happen all the time, only under very light load conditions. They do not in the Tow/Haul mode. The exhaust brake and autos did not very well at all. The new truck (my 2011) exhaust brake works better than my last stick truck. The truck holds lockup and downshift slowing the truck very quick especially when using brakes in a hurried stop. I am very happy with this truck, less road noise, miss the engine purr, better interior, did I mention heated steering wheel, better steering, better brakes, ect. Dodge stepped up and built a competing truck. Sam