Disagreed: "Middle wheel does not replicate the feel of the desktop version"
Disagreed: "The desktop version allows for a gradual switch between regular and 'free-wheeling'. This version is either ON or Off"
Disagreed: "Pretty expensive relative to competition"
Agreed: "Very nice fit for people with smaller hands."
Agreed: "Very Durable"
Agreed: "Rolling middle wheel is very advantageous"
Agreed: "Works instantly with XP and Vista"
Agreed: "Tracks accurately"