Dude, im being honest with you, the players only use these equipments for sponsor, fallen for example, in championships, he uses the keyboard of him brand. Its a great keyboard, and razer keyboards really sucks, the only thing of razer its really good its deathadder.
Just trust me
Keyboard > Corsair or HyperX (Corsair was choiced as best keyboard of the world)
Headphones > Senheiser or HyperX (Logitech can be considered also, and i have an Hyper X)
Mouse> Razer, Logitech, Zowie ( i have Deathadder Elite Chroma, its awesome!)