Razer for the keyboard, because of the macros.
Logitech for the mouse, a big fan of the Logitech G302 Daedalus Prime, the mouse itself is pretty light and comfortable to use. It's good for MOBA and FPS games.
Logitech also for the headset. Not going for Razer due to my experience with it's quality. I already got 2 Razer Kraken Pro with a deaf left ear.