I am a woodworker by trade and run my own business doing custom cabinets and furniture. I have a friend who bought a 94 affinity and had me do some work in it.
I upgraded the cabinets to fit new flat screen tvs among other things and can say the woodwork in those motorhomes are top notch. The quality of the joinery and use of solid wood throughout rivals any of the high end work I've done in people's homes.
I've done some work in other rv's and found the use of materials and construction to be disappointing at best. Faux wood veneer over particle board and lots 1/4 inch panels where at least 1/2 inch should have been used and lots of staples. None of that in the country coach.
As far as maintenance on an older rig I can tell you my friend had to have his generator rebuilt, cruise control fixed, tires replaced, shocks replaced, clear coat was starting to flake so he re cleared it, some radiator hoses replaced, new backup camera installed, and a few other little things. Now that's over thousands of miles he's put on it since buying so not too bad.
He's got less into it than my parents who bought a 2003 Winnebago brave brand new and his is quite a bit nicer in my opinion.
I say go for it! Of course, it's not my money...