Both are good rigs. For me, I purchased the F-350 SRW diesel truck. The one before it was a Dodge Cummins 1 ton dually. I prefer the SRW for what I use it for and I like the TT combination the best. We have a couple of 5ers in the family and they are great, but I want to take a quad in the bed of the truck so that leaves out a fifth wheel. I also like my silver Avions and the fifth wheel Avions are quite rare. You can't go wrong either way, but I would pick the trailer first, or get a 1 ton truck in diesel so you can easily tow either one. For some folks, the diesel option isn't worth it, but for me it is.