exceptional mouse! bought this to replace the roccat kova+ because the scroll wheel began to loosen and wobble, thus the scroll wheel became more difficult to carry out the action of scrolling up and down whilst browsing internet pages. the mad catz RAT7 looks, feels and responds amazingly and would go as far as to say its the best mouse i have ever owned.
extra weight components can replace parts of the mouse to make it heavier and therefore tailored more to your liking. the components can have grips, logos or smooth aesthetics and even has an extra pinkie rest on the right hand side if desired! mouse wheel feels very sturdy and robust, extra button next to the main left hand side finger button also.
there is a handy little pin in the back of the mouse which can be detached or left in place which is used to screw/unscrew the other components and help customise the mouse to suit your needs.
everything about the mouse feels extremely sturdy and solid build quality. the dpi sensor is (for me personally) very strategically placed and all in all i cannot fault this mouse one iota and would definitely recommend buying this mouse hands down!