Just my opinion but here goes
Nicest interior...Ram
Quietest...Chevy
Smoothest riding...Chevy
Best gas engine...Ram
Best Diesel engine...Ram and Chevy (tie)
Best HD transmission...Chevy (Ram aisin may be ok too, it is too early to tell)
Most durable front end...Ford
I would go Ram or Chevy/GM. My 2011 Chevy 2500hd is a better truck than my fathers 2011 2500hd ram. Stiffer frame, higher payload, smoother riding, etc. of course, GM basically came out with an entirely new HD in 2011 sans body style and interior.
The new ram has an entirely different design, while the GM got a facelift but has the same guts as the 2011. If I had to rebuy today, I would look hard at the Ram with the 6.4 for a gasser. If I wanted diesel, it would be a coin flip between Ram and Chevy for me.
