I always advise to go with the highest capacity truck you can afford. You want to be as safe as possible so don't skimp.
I drove a 1 ton dually crew cab long bed (without camper) for several years as my daily commuter. My commute was 24 miles into and out of Downtown Los Angeles during morning & afternoon rush hours. I liked having the roomy cab while stuck in bumper to bumper traffic. In addition, cars tended to move out of my way once they spotted me in their rear view mirror.
Fuel mileage was 9-10MPG empty and 7-8 MPG loaded at 55MPH or 6-7 MPG at 70 MPH.
The commute ride quality wasn't bad as long as the road wasn't bumpy.
