ASE Labs posted a review on the Logitech G9 Laser Gaming Mouse

Since Logitech never stands idle in the fast paced computer peripheral market, they have redesigned their gaming edition of mice. The G9 is a definite step in a different direction compared to the previous top of the line model, the G7. It is now a corded mouse and incorporates features that are present on the MX Revolution and from the G5. While the cord can be a burden, the entire mouse is a great evolutionary step.

Logitech G9 Laser Gaming Mouse Review