My mouse is technologically sound but the mouse feet are worn on one side and although its smooth to use it looks little grimey. I have the logitech G5 and it was a big improvement over the Microsoft intellimouse in terms of sensitivity (which I need and I only twitch my wrist rather than move my whole arm to use the mouse). Is there anything out that is actually better than the logitech G5? I was surprised that it made a difference going from my previous mouse to current.