LC-Power m710B optical

Love the ergonomic design of this mouse but the one I received sadly had an incredibly badly made scroll wheel. The turning of it only would work 3 out of 4 times, and during that phase of the rotation the scroll button just would not press down. It was clearly not constructed in the middle of its axis, but on a slightly skewed orbit, causing a predictable failure in scrolling. I admit this may have been a rare defect in my case. If it wasn't flawed like that I'd have loved this mouse. Grips very well in the hand! I asked to return it but was simply refunded. Then bought a Logitech one instead, which is wonderful, if a little smaller than I'm used to.