If you are towing anything, of any significant size and weight, diesel power is never a wrong choice. I have owned three diesel trucks, the current one being a GMC Sierra 2500 HD, and 4 gas trucks. Towed a lot of different things, from ATV trailers to loaded horse trailers and my current travel trailer, with most of them, and the ease of towing and safety factor with a 2500 diesel simply can't be equalled with lesser trucks and gas engines. In addition, the current crop of diesels, with exhaust braking systems, make downhill towing with heavy loads a breeze. If you are going to tow on flat land, maybe you are okay with gas trucks. If you are towing over high mountain passes, like we have here in Colorado, it's a whole different game.
