Happy medium between comfort and good gas mileage to haul?

Oh, I guess I focused on the "FF 189WSB 18' 9" and 3,135 lb dry wt." and missed noticing that 25 footer. Yep, that's too long and too heavy. For a 25' TT I'd suggest a full size SUV or full size pickup, or even a full size van. Ford Expedition, Toyota Sequoyah, Chevy Suburban are good possibilities... get the largest engine available in any of them.