I had a Dodge and a Ford and I like the Duramax an overall truck. We pull to horse shows and when we get there we are not drained from the ride. The new Duramax is so quiet it is often mistaken for a gas engine. The power is equal to the Ford, the seats are more comfortable, so in closing I would say to look at the Duramax dually before you buy.
Seats and easy entry.
Gear shift lever too big and cumbersome. Add 2 more inches to rear seat area