Good value for money
Good points:
Good design, pleasant to handle, no problems in wireless and wired mode, good battery life
Negative points:
sensitivity adjustment (via the buttons on the mouse) has too many gaps
From time to time, you tend to accidentally press the small side button (when you have big fingers) as soon as you grip the mouse a little too hard.
I've been using it for two months now and on the whole it's been great for bringing freedom and democracy ;-)