PS3 but only because I'm too tight to spend money on a receiver for one of the 5 Xbox 360 I seem to have collected (instead I doom myself to having to remember how to install the PS3 driver every time I need to add it to a new machine).
I might get an Xbox One controller when they make a wireless version for PC.
Throw me a black wireless 360 one? Mine are looking... Tired lol.