Its not 'good or bad' black and white. The lightweight center hats are GOOD. Less rotating, unsprung weight is VERY GOOD. Slots are GOOD. Holes can diminsh endurance and track performance (only)
We have several "GOOD" slotted-drilled lightweigt 2pc rotor options, but the ENDURANCE on a drilled rotors is less, especially if tracked heavily.
Drilled rotors are often called 'poser' rotors in the Viper World, because they dont perform as well or last as long in track or competitive use. THEY ARE GREAT FOR STREET-STRIP-AUTOCROSS! If you like the ****-racer look, but DONT track your car but rarely, you can confidently add 2pc slotted and drilled black-hat rotors from $1195/set of four !