Like the clean, simple lines of the 70s bikes, but would definitely choose the 80's for performance-especially brakes.

To me, there seems to have been a change in frame geometries in the early/mid 80s where the handling got more responsive. I can't quite put my finger on it, but I think is has something to do with fork rake and headtube angles. Many of the 70s bikes I've ridden have "slow" steering.