I just want to warn you all about Razer products... I know they look cool with all those lights and stuff but the quality is just bad. Heres a few stories:
My friend bought a razer mouse and everything was fine for a few weeks but then, it suddenly broke and couldn't be repaired. The mouse costed like 80 dollars > overpriced
I bought a razer lycosa gaming keyboard and after few weeks of use, the buttons started to become unresponsible and they jammed making it impossible to play games or write anything.
So please, don't buy razer :) I'd say buy microsoft products, they are more cool nowdays than they used to be and the quality is great!