Either the second style of Sega Saturn controller (standard, not 3D) or the PS1/2 controller are my favorite. Both just feel so right when I'm using them, though I'm leaning towards the PS1/2 side because the unlinked D-Pad on the Dual Shocks is my preferred style for fighting games. Not too big on the PS3 controller, though; I don't appreciate the weight of the controller or the way the R/L2 buttons seem to hang. Bleh.