RAM 3500 Diesel Owners - Still Like Your Truck?

Dodge, GM and Ford build great trucks these days and it hard to discern which is best for ones needs. Dodge offer air springs and Ford offers aluminum bodies. I don't know what GM has to offer. I favor the aluminum body which has the most promise to keep me in SRW 4X4 because that will fit in my garage and offer them most Combined weight capacity for my 40ft 5th wheel. The air springs will offer a better ride, but I still need the pulling advantage of the Ford.