concerning the material quality of the mouse nothing wrong, now on drivers c is another thing, if you connect the mouse as it is no problem, it is well recognized as a mouse, then download the drivers on the website of mad catz (yes none is provided in the box) and the problems begin. personally I use windows 7 pro 64 bit and although the recognition program and programming buttons do not work, he struck it worse mouse hardware level.
I looked on the internet and I am not alone in this case, to leprix mad catz would provide a minimum of stability, I will try in a Windows 8.1 machine, but I have doubts.
