I agree with RonS on this subject of big boys and their toys.
As signature below says, towing with an F-350 dually totally stock. I did change out the Ford integral brake controller for a much better brake controller and just recently changed hitch out for one which I really like, that has noticably softened the chucking motion.
There are some towing with the 3/4 ton, I know one who tows all over the country with one and it is a 7.3L, of course he has souped it up a bit. He also helped the springs with the Timbren load supports.
Now have at it fella's!!!!!!!!!