I just replaced my OEM's with ECS 2-piece X-drilled/slotted rotors. I took my ride in for the 30k service and the technician told my my rotors were warped so I went aftermarket. Braking is much improved, and no complaints about the brake dust. The only drawback is the low pitch hissing sound when braking which noticeable, but not to annoying. Other than that I'm pleased with them.