The main problem I found with this mouse is with using cloth mouse pads ? lifting the mouse would cause it to stop working momentarily when sat back down as if it were recalibrating. Using a hard surface the mouse worked perfectly. I used a Ratpadz hard pad, an XTracGear Ripper cloth pad, and a Corsair Gaming Mouse Mat cloth pad. Only the hard plastic pad worked reliably when lifting the mouse and setting it down. Optical mice can benefit from irregular or more obvious patterns and textures ? it helps them with their tracking. The cloth pads were such a fine mesh that the sensor seemed to have to recalibrate after a liftoff. If this was disclosed then this review would have been nearly perfect. Other than that, this mouse performed very well and if the price is right it is definitely worth checking out!