I had on '06 equally equipped truck, towing a 25' Jayflight and the only thing I didn't like was the braking wasn't quite what I'd like ('09 model may have better braking than '06). I did have to have the sway bars set tight to level the truck somewhat. Air bags or overloads would have been needed if I kept unit. The mileage also sucked as I didn't use overdrive, as recommended.
The Hauler - '05 F-350 4x4 CC Dually 6.0 Powerstroke
The Project - '90 Ford Bronco 4x4
The wife's - '11 Ford Escape
For every minute you are away from work...you can add two minutes to your life!