Both are very good looking trucks! I have had the Ecoboost for a few years now and it is perfect for our needs. Very quite and smooth on the highway in everyday use, and handles our TT with no issues when needed to tow.
I also have the 6.5 foot bed which does make parking in town sometimes an issue.
Make sure you check the yellow sticker in the drivers door for the CCC. Dodge does seem to have lower payload weights. I looked at a RAM 1500 diesel while having the oil changed on my Jeep that had a 1400 payload sticker. For the mileage you will be towing, with a 8000 lb TT, I think I may lean toward the 2500 with the 6.4.
Take your time and test drive, or rent them both ! I think you will be good with either one!
Good luck!
