GameCube controller is an automatic disqualification for me because the d-pad sucked so bad. Also the one Z-button was lame and the bean button layout was overrated, for regular fighters gimme a diamond shape anyday.
The Wii U game pad honestly I think is their best controller, it just looks stupid because it's so big and clunky but from a controller POV ... it even can to the aiming stuff the Wiimote does (see Splatoon). It's the most functional overall, good size d-pad, nice triggers, nice analogs, motion, the touchscreen stuff if you just look at it as a bonus is fine. The pad is so big that neither the d-pad or analog feel like they're in the "secondary" position.
It's just too big (unneccessarily too IMO). They could've made the gamepad smaller and sleeker.
Wii U Pro Controller is good too, but I don't like the d-pad and buttons being so close to each other.
