In a previous post (
Spec Boxster Build Post #1238), I mentioned that the Pagid Black brake pads are somewhat known for being hard on rotors.
After about 5 hrs of track time, there are already grooves that can be seen and felt when running your hand radially across the face of the rotor. The brakes work great and provide truly brutal stopping power, but they do require some heat in them and a bit more pedal force than the Pagid Orange. They can be a bit hard to modulate and its easy to over-brake on corner entry.