I don't. I only got their E-line rotors. They do the job for me. I think other users have used them though try searching to see if anyone posted any good info.
And Chad I'm not trying to attack you. But a $50 set of ceramics will perform way better than a $20 set of semi-metallics. They produce less dust, are way less likely to squeak and last longer. Mainly because ceramic as a braking material handles heat a lot better so it doesn't break down or fade as fast.
Of course there's other types of pads out there. I just use semi-metallic and ceramic as examples because they're most commonly purchased.