I bought into getting a gaming headset because I am stupid lol. But the Kraken Pro is actually pretty cheap compared to buying an uberly nice set of headphones.
If you are still deciding on those two, I suggest getting a Kraken Pro. I have it, and the quality isn't too bad and the mic is actually pretty good. It isn't studio mic perfect, but my girlfriend says it sounds like I'm next to her, and when I play with friends they say I'm crystal clear which is all I need.
I suggest getting the black because they don't look stupid...I got the lime green cause it was an impulse buy.
If you have the money then just follow what the above post says.