Any new Ram Owners?

Mine's not the new style, but I had a 2011 and now a 2015 with a 8 speed and 3.21's. I tow a 28' travel trailer that weighs 6500 pounds with it. I've got 87k on my truck with 43k of them towing the camper, there are no issues using the 3.21's. It's a bit sluggish from 30-50mph, but other than that, I don't regret getting the 3.21's. My neighbor has the 3.91's in his, and tows a similar camper, we both get the same mileage with or without the camper.