Pulling a fiver is so much nicer than a TT! We went from a 30' TT to a 40' 5er and it tows awesome.. I do tow it with a dually though too.
2006 dodges are nice. I used to have a 2005 prior to my dually. I suggest if you go newer, try to get 2013+... lots of improvements to the frame and the emissions systems are better on the newer ones!
2014 Ram 3500 CCLB 4x4 Dually 68RFE, 370/800 Cummins 3.42 highway gear - Deep Cherry Red
2016 Coachmen Chapparal 360IBL
Sold - 2005 Dodge Ram 2500 SLT QCLB 4x4 - Cummins Power