theres plenty of other brands... but for track days u will more than likely go thru a set on the day... so if i were u i would keep the ones that are on there now and buy a set for when u go to the track and swap back once ur done... cause generally u dont have much left of them afterwards
if ur going to be doing a lot of track work i would recommend highly that you upgrade the entire system... go for something like whats on mine... 300zx brakes... or even R33 GTST brakes... plus then u get the added bonus of more choice when it comes to wheels
im thinking of upgrading my fronts to R34 GTR rotors but i need to see if the 300zx calipers that are on there will fit the rotor.