When I was making the same decision 10 years ago people that had both told me if you are a traveler, moving every couple of days buy the Class A. If you are a camper, weeks at a time in one spot or seasonal buy the 5th wheel. I figured I was more of a traveler so I bought the Class A. Besides the the convenience of set up, having 2 vehicles in case one breaks down to go to the parts store which has happen several times is the overall fuel economy of the Class A over the 5th wheel truck combo. I have a Toyota Corolla that gets 40 mpg highway and the 33ft Class A gets 8.7 averaged over 80,000 miles, I put as many if not more on the tow car to explore, sight see, and go into town. So I average 23 mpg for the combo. The 5th wheel may get 12 towing and 17 running around town so its not even close. Another thing that swayed my decision is that my tow car is also my DD, I would not want to use a truck as a DD unless it was a work truck that I would use every day. Having said all that if you already have the 5th wheel and truck and its paid for, I would keep it until it was no longer operational or nearing the end of its useful life. Camping is good in both.