I needed a tow truck this past month to go from Colorado to Texas for the PCA club race. I researched this topic closely and decided I wanted solid, dependable rig capable of pulling a open light aluminum trailer (trailex) and my 911 racecar with ease. All the equipment to be stored in the truck, not the trailer. I bought with a 2000 Toyota Tundra 4X4 (4.7 V-8) with tow package 7000 lb rated. The combination worked well and on the return leg through a pretty nasty ice storm. We averaged about 15 mpg but we rarely exceeded 75 mph. I bought the Toyota for dependability, ride and quality. Tundras rock! YMMV