It depends on the game.. I like playing FIFA, Cricket, DMC etc in Joysyick.. and other FPS, and TPS games, I prefer mouse..
I don't really play any games that'd benefit from a joystick. At time I use a joypad, but the majority of games I play, I prefer a mouse.
If i play FPS/Stratergy games like call of duty, starcraft... i prefer mouse and play them on my computer.
Mouse since I have been playing using it for many years. Can't even think of anything else no matter how easy that would be.
depends on the game. if FPS or RTS the I will go for mouse+keyb, but when it comes to racing and action games I prefer joystick