We started looking at travel trailers about 5 years ago and realized that our SUV was not going to tow anything that was the size we wanted with the features we wanted. At that time we decided that we'd likely be OK with a 1/2 ton truck so we bought a Chevrolet 1500 Crew Cab (4 full-size doors--because we have 2 children in car seats) with a front bench seat.
Last year we finally found a trailer that we wanted and bought it because it fit our wants in a trailer and was also well within the capacities of our pickup.
After taking the setup out about 8 times I found that the truck did fine pulling the trailer, but we decided that we wanted something more. We stayed with the Chevrolet Crew Cab, but we went up to the 3500 1-ton (single rear wheel) diesel.
I am very pleased with our new tow vehicle, but our old one did fine too. The big difference is that with our old TV we could definitely tell that the trailer was on back because we would feel the movement and could hear the engine working harder. With our new TV we hardly notice that there's a trailer connected.
In the end, you may find a TV and a TT that is within the TV's limits, but sometimes it is nice to know that you have a TV where you aren't pushing it's limits at all.