When it comes to the performance of the Logitech G500, it was quite impressive. The mouse was able to perform well on all levels of testing that I put it through including the precision testing, the customization testing, the comfort testing, and the speed testing. When it came down to the amount of customization that Logitech has given us to have over the mouse, I was impressed. With most mice you are able to change the pointer speeds, a majority of the buttons, and the scrolling rates, however Logitech has given us the ability to create macros and store them on the mouse's onboard memory and be assigned to any button on the mouse you may wish.