You forgot the Ouya
Seriously enough it makes the Gamepad look traditional.
The standard for PC Gamepad has been the 360 controller for a while now. For lots of reason, namely a good API for it. My big concern with this controller are:
Tactile button pressing. The haptic feedback can be great but their is a reason I play Euphonium over Trombone.
Those 4 buttons in no where land being of any use.
That swoop out in the front where it looks your finger go in.
Clear onscreen indicators.
I can't really imagine playing something complicated like Wonderful 101 on it.