Anyone got a 3500 Ram 6.4 Good or Bad?

Diesel all the way, i have a 14 ram 3500 dually and love it, around town here 13.5mpg pulling was up to 16 i think on tow/haul mode, plus we drive this on vacactions and i have gotton on the average 30mpg, no lie, course didnt have much in the bed or towing, and mines set up with the 4.10s as well.