I was in the same situation you are I have a 27' T/T it weighs just over 6k loaded. I wanted something that was going to be a driver most of the time, set low, got good gas mileage, had a nice ride and could pull my T/T. I bought a 1/2 ton with tow package 2010 GMC crew cab 4wd 5.3, it does every thing I want it to do. really like the power train, the engine has plenty of power the 6 spd. works great and it gets about 23 mpg on the hi way not towing. the ride is nice and smooth and its easy to get in and out of.
Jay D.