Been a big fan of my Razor Naga mouse. It's configured for RTS, but there are similar models with better configurations for FPS. The big plus on the high end Razor mice is the darkfield tech, fast refresh rate, a lot of them glow (awesome!), gold plated conductor on the USB end, and the cord is braided with nylon so it's very durable, also pretty comfy. While you're looking into it, you can also get a cord weight or spring to reduce resistance from the cord.