Top critical review
Middle button has problems, side button in the wrong place
on March 21, 2014
The biggest complain is that the side button on the mouse is in an awkward location. You won't be able to reach it with your thumb naturally so to get to it you have to let go of the mouse. Terrible design flaw.
Also there is a quirk with the middle button. When you roll it down, sometimes it goes up. Turned out my mouse was defective, but after a while the replacement mouse started doing the same. Obviously there are quality control issues.