Wired or Wireless XBox 360 Controller for Win RT Tablet?

Before I continue on with my question, I just want to give an update to my question regarding my Asus Vivo Tab RT's battery draining too fast. It's okay now, I charged it full and left it idle with 50% brightness and Wi-Fi to see how long it will take to die, and to my surprise it did reach 8.5 hours (with some very light disk cleanup tasks).

For my next question, I want to play Snes8x with an XBox controller, but I want a controller that uses the least amount of power from my tablet.

Out of wireless and wired controller, which will drain the tablet battery the least and the most?

(And will there be PS3 support in Snes8x soon?)

Thanks!