Ever heard of Dream Machines? They are a Polish company that produces relatively affordable high quality stuff, and the DM1 FPS is their newest (and I'm certain best) mouse. It features a PMW3389 optical sensor, Huano switches rated for 20 million clicks, an all-new, extremely flexible cable, and more.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips