Like john said its a toss up.... If you could snatch it for 500 go for it, I would. But if you hold out I know that in the lower 48 87+ go for under 1000 all day that are in good shape.
The first gens may be 5speed, under powered, worser handling and have their problems but they are VERY light and nimble.
The 87+ are much faster and balls-ier and have 6speeds.. and handle better but the PV's are a joke and clog all the time, have a more complex engine and are heavier..
If you really want one the best years is 91-92.