I have really good service from my 2002 Keystone Challenger 36' with three slides, washer and dryer, 10gal. hot water heater, 27" TV, 2 a/c's, heat pump and gas furnace. Loaded, it's heavier than your 3500 or my 2500HD is rated to pull. Little known fact....3500 is rated to tow less weight than a 2500HD with the same package. 3200lb kingpin weight, 16,300 total. It pulls and stops excellent. The Keystone is a good value price vs. quality. The Challenger is the same as the Keystone Montana with different floor plans. One thing that was my main concern while looking for a fifth wheel was low ceilings in slide-outs and upstairs overhang. I'm 6'1 and would bang my head somewhere on almost every model I looked at except the Keystone, which at the lowest part of the ceiling is 6'2", even in the slide outs. You also want to make sure and get the artic package which adds more insulation and heated tanks, even if your not in the cold country as it will keep you cooler in the summer as well.Edited by: neverenuf