TrustedReviews have looked at the Logitech G9 Laser Mouse.
A quote from the article:
Logitech G9 Laser Mouse Review
If gaming is your thing and the PC is your king then the Logitech G9 is your one stop destination for gaming domination. It's well designed, well featured and incredibly versatile and as such comes highly recommended.
Logitech G9 Laser Mouse Review