TrustedReviews posted a review of the Razer Diamondback Plasma gaming mouse

Trying to change your sensitivity while playing a game can be tricky, since the graphic tends to flicker constantly while you try to set the mouse speed. That said, it’s still a big improvement over the single button 800/1600dpi setting on the Saitek, but I still prefer the plus/minus sensitivity buttons on the Logitech.

Razer Diamondback Plasma