is the auto better than the 6 speed i drove both and i feel that the 6 speed really bring out the power of the cummins does any one know which is more reliable i love the stick but i heard the gears are prone to problems i will tow about 10000 maybe 10 percent of the time i have an auto now and i dont like it i want to buy a new one 04 or 04. 5 thanks