Welcome, Glen, from a near neighbor. Having had an Class C as our first rig and now in an "A", we wouldn't go back to a "C". There's so much more storage and general usability, from our point of view.
So they're bigger and not quite as fuel-efficient and they ride like the 11-ton truck that they are under the skin, but for 5 or 6 thousand miles a year, we can live with the limitations.
When we were shopping two years ago, we saw a lot of very long-bodied Class C's on relatively short wheelbase E450 chassis. I actually test-drove one and stopped off at a truck scale. The load on the rear axle, with nothing in the rig except us, the salesman and half a tank of gas was within a couple of hundred pounds of its limit. Since the grey, black and fresh-water tanks were all behind the back axle, you coulod be overloaded before you ever left home.
My advice is to steer clear of 30 or 31-foot Class C's with a long tail overhang.
Frank Damp -Anacortes, WA,(DW- Eileen)
ex-pat Brits (1968) and now ex-RVers, as of 08 Dec 14.