Mad Catz’ R.A.T. Pro X. Jan 12, 2016 · What is the Mad Catz R.A.T Pro X? If the Xbox One Elite Controller is the best of the gamepads, you might think that the Mad Catz R.A.T Pro X – with its various parts and customisation options .... Mad Catz R.A.T. PRO X Ultimate Gaming Mouse MAD CATZ. 3.7 out of 5 stars 82. Windows 7. ... I've been through a number of mice over the last 20 years, but without question, the Mad Catz R.A.T. 8+ has the best feel for me. I've always found that I can't reach the the forward thumb button on almost every mouse, so I hoped that would be different.