I think I will go for a 350 4x4 I don't do that much gravel hauling its too hard on any light truck I do mostly rubbish removal and hauling lumber for a local mill. I was hauling demo waste on sunday the heaviest load I got on my truck was 2000lbs I ran out of deck space before the truck was overloaded. A 1 ton could do that job most rubbish hauling jobs are in this range having 4x4 can enable me to get closer to the piles of junk. There are times where I have to carry the trash the truck because I can't get down a road or on a part of the person property without getting stuck in 2wd drive. If the demand for the gravel hauling my dad and I may buy a tandem axle gravel truck we have been wanted to for awhile now. A tandem axle dump will darn near go where a 5 ton single axle will the other thing with a tandem you don't have to worry as much about getting stuck. Single axle 5 tons are known to get stuck easy with only two tires driving just don't have the traction even with a locker. The problem what I have now the homeowner wants me to get into a tough spot with a 2wd drive and I'am always concerned on getting back out. If I never left the pavement with my truck I would probably keep the F-Superduty but I live in a rural area where jobsites are tough to get to.