Don't take my word for it - read a few brake sites and do your own comparisons. EBC is pretty candid about what their products will and will not do. (Slotted rotors last as long as OEM, drilled do not: don't forget that when you slot or drill a rotor you effectively remove a fair percentage of the braking surface so the rotor has to work harder to achieve the same slowdown rate as a plain, flat rotor).
At something like $495,
www.perfectbrakes.com, for slotted rotors and Redstuff pads for my STS the damn things had better NOT be "disposable" !!!
(A call to Great Britain (EBC manufactures in England) confirms that the Black Dash can take 2 mild truing cuts before they're trash -
just like every other brake rotor on earth.....)