Negative Positive
Title: Best mouse of its kind
Review: I've used several optical mice over the years, and this one beats them all. The buttons are all programmable and while the software doesn't let you configure the buttons/acceleration/speed to the extent that Kensington does, the shape of the mouse is very comfortable (for righties only). If you want a symmetric mouse or more programmability try Kensington's mice.
Is the review positive or negative? 