Hello, everyone I am new to forum and towing a 5er. We shopped for 5 years and decided on Heartland 2014 Big Horn 3570, and are very happy with it. A few problems but nothing major. Since this discussion is about trucks I wanted to share our experience. We live in Southern Calif. and purchased the trailer in Michigan. So our first tow experience was significant to say the least. After looking at Chevy's and Rams we bought a new 2013 Chevy 3500 SRW, CC, LB, Duramax/Allision LTZ. Both are nice trucks, the deciding factor for me was the Allision transmission which is every bit as important as the engine. The truck exceeded all my expectations in towing power, braking, load handling, and mileage. Our mileage was 14.3 MPG for the entire trip home which included climbing over the Rockies. My average speed was between 61-63 MPH. I did exhaustive research on weight and limits and always felt the truck was in command of the weight. I will say I was very weight conscience and understand limitation for a SRW truck. After arriving home I weighed the rig and found the unit under capabilities of the truck in both pin weight and CGVW. However with all the storage room I can see how easy it could be to overload. I enjoy the forum and learning from all you experienced 5ers.