The Vita dpad is my favorite, it's so damn responsive and just clicky enough.
My newest 360 controller is just barely ok, while my older ones are horrible at properly registering directions. My Saturn pads are generally awesome. Most of my SNES pads are great too, even though hey are a bit soft. I've just bought too many third party controllers with mushy unresponsive pads, or first party controllers like the Wii remote that are just too small. The PS3 pad is at least responsive, but I'm pretty against the 4 way split, and it almost ruins certain games.
I have high hopes for this because of some similarities to a snes pad.