An, umm, well-seasoned fan's perspective:
- 1970s: Roman Gabriel (peaked before my time, in the 60s), Bert Jones. Watch the tape!
- 1980s - 90s: Elway, Randall Cunningham, Steve Young, Steve McNair, Favre
- 2000s - now: Culpepper, Luck, Rodgers, Mahomes
All big (or big enough), athletic running threats (Luck would surprise you), big arms, big cojones