i would say stay away from the siberia v2. it may be that i am, unlucky but i had to deal with their support (which was abysmal) on two seperate occasions because of the microphone dying. the first time the static coming through the mic was so loud that my teammates would often mute me. the second time after a week of rolling the mic into the earcup it would only work if pulled out very slightly and no one could hear me. between each problem it took me over a month to rectify the issue. that said if you get a good one they are excellent while functional. i since broke my boycott and got a Sensei mouse and am very happy. i would say go with the kraken for peace of mind. also i have loved all my razer products- blackwidow ultimate + nostromo. very good products imo