Here's my list of maintenance items: (I won't even start with mods, lol)
new harmonic balancer (old one wobbled and made the belt squeel)
headlight gears
new seat skins
radiator
a/c compressor
plugs/wires
t56 rebuild
clutch
clutch master/slave
the tranny was not "needed" but i figured why not when i changed the clutch. clutch was changed because the slave cylinder blew. This was at 152k miles.

no leaks, no rattles. and with the addition of a double din with nav and backup cam, i can't think of any reason a C6 is better.

People will complain about leaks and electrical gremlins. Corvettes sleep inside and don't get driven in inclement weather. Follow that rule and you will be problem free.