Something on a Mercedes Sprinter will be right there at 24-25 feet and have good fuel economy. On most dealer-sold brands, you can expect to get something like 25% off the list price.
Itasca Navion/ Winnebago View
Forest River Solera
Fleetwood Tioga DSL, Jamboree DSL, Jamboree Ranger DSL, and some other Tioga something DSL
Four Winds Citation Sprinter
Phoenix Cruiser Sprinter
Some people worry about the type of roof, with fiberglas being more desirable than a membrane type.
Ron Dittmer posts a nice rundown on body construction that would help you from a quality standpoint. You more or less get what you pay for.