I guess you see the trend to go with a 3500. After I picked out the 5th wheel we wanted (16k GVW) the salesman told me a 2500 would do just fine. Well I checked the actual cargo capacity of the various 3/4 ton trucks (actual cargo weight as listed on the drivers door) and found that after adding my pin weight, DW, and hitch I was at max cargo weight for a 3/4 ton. Now I still had some things I would like to put I the bed when camping so I went with a 3500. I chose deisel for the torque, gas mileage, and stronger drivetrain. Also with the exhaust brake less wear on the braking system. I went big and got a 3500HD Duramax 4X4 Crewcab longbed dully. It also a daily driver and we love it.