The original MX Performance was announced back in August of 2009 as Logitech's answer to Microsoft's 'BlueTrack' mouse sensor technology. For $100, it was a pretty good deal back back then, being the first mouse from Logitech feature its Darkfield laser and Unifying USB micro-receiver. Now six years later, Logitech wants to recapture the magic of its MX Performance with the 'MX Master', which is aimed at those who want a high-end mouse that isn't designed for gaming.