I would not recommend the Blackwidow; The mechanical switches are manufactured in China, whereas most of the other mechanical keyboards have them manufactured by Cherry in Germany.
Depends on what you like to play,
For RTS,MMO
I recommend a keyboard with Cherry MX BLUE
switches for the feedback.
For FPS, I would go with Cherry MX Red because the keys activate faster when you click them, and there is less resistance. It is also great for playing OSU.