A slide or no-slide depends on if you view an RV as a mobile motel room or a mobile backpack.
We view our small Class C as the latter ... hence it does not have a slide. This provides for maximum coach wall strength year after year and overall coach reliability year after year ... on or off smooth roads and close to civilization or not.
We actually got a great deal when we bought our short but heavily optioned Class C due to what I think was this reason -> the dealer had it on their lot for over a year and probably couldn't sell it because it didn't have any slides!
It's large enough inside for the DW to have a lounge chair, me to have a dinette or cab seat, and our dog-person to play short-range fetch in.