gogmorgo is spot on. We looked at the diesel before buying our Hemi Trailhawk. It was a demo as the diesels were not being sold because of their issues. We drove it and I was not impressed at all. I have been a diesel mechanic for 25 years and it did not feel like a diesel should. I worried about issues later on with the emissions system. We drove the Hemi next, took it home for the weekend and drove the piss out of it. We put 500 miles on it and loved everything about it. Power? Oh my world is it a beast! Economy? Yep, 22+ on the highway. Comfort? so smooth! the trans knows just what gear to be in and when.
The most important difference, LIFETIME Mopar warranty. Unlimited mileage, bumper to bumper warranty. Look into the Max Care if you plan on keeping a vehicle for more than the factory warranty.