Logitech is a leader in the land of input devices for several reasons, one being a constant effort to innovate. One innovation that made quite a splash over the last year or so in the world of mousing is the award-winning MX Optical Engine. This high resolution optical engine in its original form can be found in the MX 700, MX 500, MX 300 and MX 310. The latest mouse to join this family is the MX 510, which features a new and improved MX Optical Engine. That's right, one of the best (or the best, depending on how you feel about comparing differing optical engines) optical mouse technologies just got better! The average user might not care much, but gamers are always looking for that edge.