We bought our used 2008 8-11 Classic last fall. It was purchased at the original dealership that it was sold at and it looked as if it hadn't been used much at all.
We polished/waxed the fiberglass and it looks fantastic!
The only thing that we've done other than that is replace a handle that had broken on one of the Dometic windows (really like how they swing wide open!), and then we caulked all of the exterior seams.
We did a huge circle around the US from coast to coast, circumnavigated the Olympic Peninsula, then fly fished our way through B.C. and Alberta with no issues. About 11,000 miles in all.
I just winterized it this past week and bought a cover to put over it for the winter.
FYI; The carpet headliner in ours is in great condition and looks and behaves as new.
