31-ft Class C with "wide body" which is 102" instead of the older 96" width. Your mirrors stick out farther.
We wanted a rear queen bed along with dinette and sofa plus a pantry. There were some "28-ft" that offered most of that. The 31 provided all that and an extra pedestal chair in the living area.
We can get into the "30-foot" sites. Class C's have a comfortable steel cab with airbags and shoulder belts along with easy in/out for stops. Being lower than an A can be helpful but comes at the expense of outside storage volume. Sounds counter-intuitive but Class C (at least on Ford E-Series) doesn't turn as tight as Class A of the same size. The big radius hasn't held us back, but it requires a little more planning in maneuvering.