We towed a 36 foot 4 slide 15,600 5th Wheel first with a 2500 short bed gmc 8.1 gas with a manual slider hitch and it handled it ok , then towed that same 5th Wheel with a Chevy 3500 diesel DRW long bed ext cab and it was a dream to tow ! It always felt like there was more than enough truck and was rock solid towing , Really depends on how often and how far your towing . If your doing a lot of traveling you may feel better with the long bed DRW , from experience there is no better setup but cost can’t always be justified. I have always had a Toyota echo that’s now about 20 years old for a daily driver when I was working so having the bigger truck has never been a problem , currently have gone to a DRW gas setup for our current TC which has also worked out well , you will never hear or read about someone having to much truck!! Good luck and safe travels .