I would go with MX72's if you are doing relatively infrequent track days
MX72's should be fine for double duty...if you really plan to punish the car at the track (red group leads me to believe you will be fairly aggressive out there) and brake noise is not an issue for you...then I would recommend the ME20's in your situation!
Any pads will lead to cracked OEM rotors when tracking because of the cross-drilled design of the rotors. If you're going to be tracking, consider something like AP Racing's J hook rotors. They are less expensive than OEM and won't crack like the stockers will. I got 18 track days out of my front J hooks and probably could have gotten a few more, but I replaced them. The rear J hooks still look great.either one will crack the rotor ?