That helicopter mission was the last one I played in Vice City--I gave up on not just the game, but the series.
I skipped San Andreas but did pick up GTA IV--and after 5 hours wished I hadn't. Terrible controls, lousy/no checkpointing, a character that controlled like he was riding a bicyle (that Euphoria nonsense), needy friends--I was not in the camp that thought GTA IV was the greatest thing since ice cream.
However, I enjoyed the two expansions. They finally adding checkpointing that was worth a damn, streamlined the experience and removed a lot of the bullshit, and to me, finally figured out how to make the series fun. I loved the motorcycles in TLATD. It'll be interesting to see what direction GTA V takes.