The upper end models from Newmar, Monaco, Holiday Rambler & Beaver (both part of Monaco), Fleetwood & American Coach (part of Fleetwood) are all excellent. Winnebago & Itasca too, in the upper-mid price range. The higher priced coaches are not simply base models with more amenities - they get a better chassis configuration, higher quality wiring and plumbing systems, better cabinetry and upholstery. They also typically have the features that you end up adding onto the lower end models anyway, e.g. surge protectors, variable speed water pumps, etc.