Keystone Carbon 403

The Carbon 403 packs a lot into its toy hauler layout. Electric beds, a large refrigerator, auto-leveling, and a patio ramp setup that owners consistently call out as standout features for a rig in this class. The single full bath keeps the floor plan efficient, freeing up space for the garage while still supporting longer stays comfortably. Keystone's Carbon line has a reputation for strong amenity packages at a mainstream price point, though as with any used unit, verifying seal condition and recall history (a 2018 fuel-station floor recall affected the Carbon line) is worth doing before buying.