Seventeen miles per gallon in a Class C is the kind of number that makes you look twice, and owners of the Qwest 24L consistently report exactly that from the Mercedes-Benz Sprinter diesel chassis underneath. At 25 feet, it's maneuverable enough that renters call it "extremely easy to drive," yet the layout packs in a U-shaped dinette, a bunk over cab, and a full bath without feeling cramped. Entegra backs it with a two-year limited warranty, which is notably generous in this segment. Owners who've sampled Class A, B, C, and trailer setups often land on this one as their favorite. High praise from people who've tried everything.