So far...
Good- Rides smooth, quiet, lots of features, pulls a trailer very nice.
Bad- laggy turd, bad vibration in rear, I have 3500 miles on the truck and have now finished my 3rd full tank of def. Last tank of fuel, which was 100% town driving. I got 230 miles to a tank (8mpg). Truck gets 17 on the highway at it's very best. Run it up to 75-80 you will get about 12 and a bad vibration to go with it.
My opinion- Even for the Highway the 3.42 gears are way to freaking high. A 3.73 is as low as they should go. It will also help with the trans issues. The fuel mileage is a joke and it will likely be the last new dodge or cummins I own if thats how the mileage is going to be without the "legal" options to delete them.