Just got back from picking up our new 33' Keystone Everest 5th wheel. I couldn't be happier with the handling, towing and braking performance of my '07 F-250 diesel. Sharp turns are a breeze with the Sidewinder hitch and short box. As soon as I hooked up I headed for the mountains for a short test run. The first killer hill west on I-70 from Denver is a long, steep climb and many 18 wheelers lose their brakes comming down it. Pulled it at 65 mph and could have gone faster. Tranny temp never got above 160 degrees. Comming back down I was amazed at how well the tow command braking system works. Had thought of having an exhaust brake installed, which I had needed on two motorhomes we had prior. It's not needed with the tow command while pulling a 13,000 lb. 5R. With the 9,800 lb. spring package the 1,300 tongue weight only dropped the bed about an inch. This set-up is awesome!