Game Cube by far. No contest. The buttons were masterfully placed to allow for the fastest reflex response. It's still the fasted by far. Having the A button in the middle with your thumb hovering over all the buttons at once. Some may say you can do that in the center of any controller, I'd say it's not quite the same. It's by far the best controller for fighting games for this reason. You can really feel the massive difference with Soul Caliber II. Bloody Roar: Primal Fury was another fantastic fighting game on the Game Cube. The click triggers were also phenomenal with what you could do with them. The only real downside of the Game Cube controller was how uncomfortable the C-stick was.
The Pro Controller is very good but the second analogue stick is very poorly placed. When I'm aggressively using it in fast paced games. The bottom of my thumb sometimes hits a button. Which is very annoying and inefficient for some games.
