The logical way to approach this question is how you plan on traveling.if you plan on spending weeks on the road boondocking then a motorhome is vastly more convenient. If you plan on traveling short distance and then parking at a full hookup resort then a fifth wheel can be a great choice. Keep in mind that the tow rating on consumer trucks is very optimistic and considers occasional use at or near GCWR not full time use. A 1 ton dual rear wheel truck may be rated to tow a 15,000# 5th wheel but you have limited margin. Frequently people move up to the 2 or 3 ton units (F450,F550, 4500, 5500). Don't let a salesperson con you into using a 3/4 ton or SRW 1 ton for a large 5th wheel. Also keep in mind driving a large truck around for day trips is no picnic. I'd rather have a small SUV or toad. Towable units are a pain to disconnect and set up. For maximum flexibility I recommend getting a 5th wheel with a built in generator with automatic generator start. I would count on spending about $80,000 on the truck and north of $100,000 on the 5th wheel. If you go the towable route.
