Excerpt: It’s difficult to improve on something that’s already damn near perfect. That’s the problem Logitech faced when designing the follow-up to the kick-ass G5 gaming mouse. The new G9 features an innovative, but not necessarily improved, design.
Pros: Same precise sensor as the G5; adjustable weight system; haptic scroll wheel.
Cons: Designed for claw-grip gamers; uncomfortable for day-to-day use.