Class A's typically have more storage space and a higher CCC (Cargo Carrying Capacity) than Class C's. The driving compartment in a Class A may also convert to usable seating for the living area more readily than a Class C, and then there's the view out the larger front window. On the other hand, some people find a Class C easier to drive than a Class A, feeling it's more "car like". Class C's also may have better sleeping arrangements for multiple passengers than a Class A. In either case, keep in mind we typically spend far more time living in our RV's than we do driving them, so make sure the floor plan is one you really like, regardless of the type.