Razer Diamondback Gaming Mouse Review
 

Quote: "The first product to receive a 100% ranking from us was the
Razer Viper mouse. I was (and still am) so impressed with that mouse. I
saw it as a must-have for gamers. Recently, Razer has unleashed the
Viper’s successor; the Diamondback. And we’ve got it."

http://www.buddhaslanroom.com/content/view/1397/26/