At the moment I have a copperhead - my first one screwed up e.g. when I clicked the left button sometimes it would bring up the desktop menu - othertimes it wouldn't. I had this replaced anyway now my current one just goes mental sometimes - or takes a double click when I click or just doesn't do anything. Also sometimes the mouse will just jump to the top of the screen.
Anyway - what's the revolution like? How does it respond and more importantly is it well built?
Anyway - what's the revolution like? How does it respond and more importantly is it well built?