Think about what you might actually need a generator on the road for. Since most everything runs on 12VDC or propane, the only things a generator might be useful for is AC and microwave. Do you honestly need this if only stopping for lunch? Now, as to what to get? Your decision, but MHs will be more expensive to own and maintain. Two drive trains can get costly. Fivers mean you are going to have to go outside from the truck. Setup is a wash. A decent 1 ton truck and a reasonable fiver can cost you 50 to 60K used. A comparable sized MH could cost you 70-80K plus a toad.