You already know you need a diesel to comfortably tow a camper that size unless you just plan on putting around the flatlands.
If you trade at 80k mi you're looking at about $35-40k private party for a cherry loaded truck value.
Obvious,y you're not too concerned about the $ if you're dumping a modern diesel at that mileage.
Any of the big 3 will kick @ss and take names. I'm less of a Ford guy by a long shot but you should t expect any issues in rthose low of miles with any of them.
Id lean towards the Ram in your position for many reasons but one that I can't quantify is that the rear springs on the 3500 Rams are hella stout. I've put trounce weight on a new Ram 3500 that buried a F350 and it just leveled the truck out. Best combo out there right now IMO. Dmax 2nd but not by much. Pstroke is a screamer but currently sitting in an almost 20 yr old chassis. Wait a year if your gonna get a ford and get a new one or get one of the other 2 and tow with ease!
