When comparing Roccat Savu vs Mad Catz RAT 7, the Slant community recommends Mad Catz RAT 7 for most people. In the question“What is the best gaming mouse?” Mad Catz RAT 7 is ranked 37th while Roccat Savu is ranked 42nd. The most important reason people chose Mad Catz RAT 7 is:
It will still work just as well as the day you bought it.
Specs
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Pros
Pro A lightweight braided cable
Roccat Savu has a lighter than usual braided cable that helps prevent kinking, curling and protects the cable prolonging life of mouse.
Pro Accurate 4000 CPI optical sensor
The mouse has an accurate 4000 CPI optical sensor. No angle snapping, no acceleration, no prediction.
Pro Great grip provides good control over the mouse
A high quality rubberized grip on top and a sweat-proof grip material on the sides provides good control over the mouse.
Pro Full Linux support
Roccat has good Linux drivers.
Pro Roccat Talk informs which profile is selected when switched
Pro Easy+Shift allows for double mouse actions
Pro Good driver software
Pro Accomodating thumb rest
Pro Good build quality
The mouse weights 90g.
Pro Good for smaller hands
Pro Reliable; keeps on going through the years
It will still work just as well as the day you bought it.
Pro Incredible flexibility
Many parts of the mouse are adjustable with interchangeable pinkie grips and palm rests to a custom weight system. The mouse is able to literally change its size and weight.
Pro Cordless version available
It also comes in a cordless version, called the RAT 9.
Cons
Con Reports of non-slip grip wearing off within a year
The soft touch coating does not last and will wear easily.
Con Laser (not optical) sensor
Laser sensors are just not that great when compared to optical sensors. Often there is acceleration issues with laser sensors.
Con Expensive for what the internal hardware is
Sadly the components inside of this mouse are pretty cheap, ranging from the switches to the laser sensor. For the price Mad Catz is charging one should expect higher quality components.
Con Forward / back buttons wear easily
The two buttons located on the side of the mouse (sometimes known as the page forward and page back buttons for internet browsers) wear out easily after only a few months of usage. That means that it requires extra force to register a button press, all while receiving no touch (or audible clicking) feedback. Frustrating but the mouse does continue working.

Con Uncomfortable "seam" where your thumb and palm meet
