Sounds like no one regrets changing up to heavier truck. I have a 09' Rockwood 8306 SS that I towed with an 09' F150 with MTP (says it can tow 11,300). Had plenty of motor but ride was a white knuckle experience, you know, feels like you were steering a boat most of the time. Had Firestone air bags, equalizer hitch and made sure everything was loaded even. What cinched it for me was when we headed for Lake Erie to do some scuba diving in the local quarries. Had 4 tanks and all the gear, 5 people and loaded trailer. I have to keep it around 50 mph cause I didn't feel safe with it. I also have plans to go west with trailer. I bit the bullet and bought a 2012 F350 with the new 6.7 diesel. What a difference, the ride, handling, no "porpoising" or "chucking" at all. I forgot the trailer was even back there sometimes. No more the tail wagging the dog. I was leary on the diesel cause TV is mostly a daily truck and tow occassionaly but I was glad I did. 12-13 MPG going 65 on flat ground and trailer felt secure and tight. Upgrade to the super duty truck was a good choice.
It was nice to see no one bashing Ford, Chevy or Dodge on thread.
It is hard to believe that even tho the F150 was rated to pull TT I have, the peace of mind you have with bigger TV.