ASE Labs posted a review on the Logitech G9 Laser Gaming Mouse
A quote from the article:
Logitech G9 Laser Gaming Mouse Review
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