I have been a manual transmission guy forever. Absolutely nothing else would do. We fell into a deal on a 2006 chevy dually diesel with ALL options. Plus the trailer package, airbags and a 5th wheel hitch already installed. Oh yeah it had 10,000 miles and the Allison 6 speed auto tranny.
Folks, I am sold on that transmission. It is SWEET! Pulls like a train and has zero slippage. It shifts at exactly the points that I would have with a manual and you have to be really paying attention to feel the shifts. And yeah, it has the TOW mode and the manual mode just in case. I did not need them with a 34 ft 5th wheel. Where have they been hiding this trans all my life.
My wife loves the heated seats. I love driving this thing. Now if I could just get a diesel well in my back yard...( $4.35 a gallon today).