I agree with Roads, the Azeron is a no brainer for me, the only thing that can be better is the joystick, which is already solved.
Best gaming gadget I ever bought, once you get the hang of it, it's so fast, way better than the NAV ever can be. Another positif thing is that I can now use ANY mouse as I have enough buttons on the Azeron ( I don't use mouse buttons anymore since using the Azeron beside ADS and Fire)