I'm in the market for a new mouse and I do a lot of gaming. I don't want a wireless mouse. It must be optical. I'm trying to choose between something from Microsoft and Logitech, but I'm open to other companies if they have good mice. What do you guys think is a good mouse for gaming? Also, I really liked the Logitech MouseMan+, which is what this new mouse I want to buy will replace. It had a great feel to the hand (its contour).