If its any consulation, green race cars here are also seen as unlucky!
But back to the thread, Smallstonefan, IMO buying a Corvette is not just buying a car, but usually a fulfilment of a long-held passion.
You buy the one that ignites your passion!!!!!
For me "a Corvette" was a C3, as this is the one I remember as a teenager! (Born 1963) so when i had the opportunity, this is what I got. Yes C4's, C5's drive better etc etc but to me they are not what i identify with as "A Vette"
I have a friend who owns & loves the C2's as he was born in about 1952, so during his teenage years, the C2 was "A Vette"
Point being, buy what you want!!! What ignites your passion!!!
Then you just work with or around the "issues" of that model.
Most importantly, have FUN!!!
Just my $0.02 worth
Good Luck