Basically a lot comes down to looks. I personally like the look of the soft cover (folding)...also if you haul something large in the bed you can fold it away where as a shell your limited to that amount of space once it's up.
Anyone noticed their Ecodiesels sound changing over time?
I have 15000 miles on mine an nothing yet. I know on older diesels they get louder as time goes on.
Some good info I found on the Ram Air Suspension, which is an option on the new EcoDiesel:
The RAM air suspension system provides full time load leveling capability along with the benefit of being able to adjust the vehicle height by the push of a button.
Automatic height changes occur based...
The Laramie Longhorn is nice! A friend just purchased the new 2014 Cummins Dually with that package. It's a dream, probably my target for the 1500 diesel package also.