Got my Annies and Mixamp Pro 2013 in so far.
And wow! I can actually hear footsteps in Black Ops 2 (a game with terrible audio, footsteps wise). This is without even using the Dead Silence and Awareness perks. With those on it would be even better... heh.
The headphones connected straight to my PC are fantastic as well... curious to see how much difference the E9K/E17 combo will make... they are coming in tomorrow.