I refuse to use a cordless mouse. I hate them almost as much as I hate printers. Unless you're dropping $100 on a GOOD Logitech or better brand they suck. When I can detect the time lag between click and action on the screen there's a problem.

My current mouse is the Logitech Mx518, I love it. Adjustable sensitivity, forward, and back buttons, and all for under $50.

Scotz are you installing the software and running your Windows updates? Because those are the only things I have ever found that gave me problems with optical mice.