What I discovered is that a F250 just does not do all you think. I've used a couple of F250s and had to put air bags on to pull the load, which means they are not adequate. I bought a F250 in 2011. Pulled a 38 ft. light trailer and soon realized this is not adequate. In the mean time bought a 31 ' Cameo, and found that it was as heavy as the 38 '. We want to get a longer RV in a year or two, so did a lot of studying, and bought a 2014 DRW F350. Made certain it would pull the heavier trailer, but even almost important made sure it would Handle the pin weight. The DRW made a would of difference. You really need to figure out what trailer you want then start looking at trucks. All trucks will pull the weight, but will not hold the pin weight. Good luck in your search.