Love my Ruby Red Metallic SRW F350 and while I have given thought to a dually so far I am unconvinced that it is worth it. 30,000 miles so far without any issues. Doesn't mean I won't have a flat tire someday but I have already prepared for that (practiced with the camper on the truck) and know I can handle it if need be. The 3.55 rear end gives me decent mileage loaded and great mileage empty and the truck is a daily driver that barely fits in parking garages now - not sure where I'd park with a dually. But it sounds like a good deal at $61k. I paid that for my F350 diesel 6 years ago. Hate to think about the new price of a diesel similarly equipped. Good luck with your choice.