I made my first trip last weekend. About 250 miles round trip. I went through Baton Rouge had to go over the Mississippi River bridge. I could have pass people up if I wanted. The truck is amazing! I also upgrade my hitch since the dealer put me a 16k hitch for a 18k trailer. I went with the B&W companion turnover ball 5th wheel hitch 20k. I could not tell I had a camper back there even taking off and stopping. Now I feel safe pulling. Only thing now is those trailer tires.
We have since pulled our Cyclone 4100 from Knoxville to Nashville TN once and Ashville NC twice and I continue to be impressed with the performance of the 2013 3500 RAM DRW. Knoxville east to NC you have to run I-40 through the mountains and there is about an 18 mile stretch where trucks are limited to the right lane and 50 mph and the truck handles is beautifully. I can set he cruise control and it maintains +/- 2 mph with little drama. Cannot speak to SRW vs DRW as I only have driven the latter. Anyway that is my experience and 2 cents.
Scott