I personally like my Logitec Elite keyboard, it's served me well and looks cool too. as for a mouse, I've looked at optical mice, and I didn't like them. So i bought the best gaming mouse you can buy. A Razer! (
www.razerzone.com) The right and left buttons are comforatble, and it's low enough to not need one of those gell things for your wrist. And it's super sensitive! Perfect for FPS, and nice for RTS, not alot of hand movment.