TechPowerUp posted a review on the Mad Catz RAT 8 Gaming Mouse
A quote from the article:
The Mad Catz RAT 8 is the new flagship mouse for Mad Catz's line of ergonomic mice. It offers a lot of customization options to make it a perfect fit for your hand and comes equipped with a best-in-class sensor and well-rounded software suite for a price of $100.Mad Catz RAT 8 Gaming Mouse Review @ TechPowerUp