My "12" has been a great tow rig. I have very few km on mine as it only comes out to tow. There have been at least three recalls on mine since new, but nothing that left me stranded. Integrated brake controller is awesome. Mine is a SRW so hard to compare mileage with a dually...but I honestly don't track or care about it. I always run with the exhaust brake on so no issues with clogged dpf filter. I was glad not to have the DEF fluid hassle...but I suppose that is just what we have to face down the road. Very happy with the truck and if I get another it will be a similar equipped rig.
Daryll