The headset no, but I do have a Mamba (but I bought mine last year). Honestly I'm not the biggest fan of the mouse, it's not bad but the regular deathadder is definitely a bit better (but obviously doesn't have the option to do wireless).
Sometimes when the mouse gets lifted slightly the cursor jumps and pressing on the back end of the left mouse button sometimes doesn't click (makes a noise but doesn't respond and sometimes it double-clicks). I've tried others and they are all like that.
Hopefully your 2012 one is better than my 2011 one (the one you bought should be the newer revision)!