i had powerstop x drilled rotors on my stang. after 3k miles they started to get hairline cracks. they then cracked so bad i could not drive it. i could fit a dollar bill in the cracks.
i wont take the risk getting the x drilled rotors when for the same money i can get slotted and dimpled. maybe they cracked due to my driving style but i still drive the same and the EBCs are holding up