Rotors
slotted are stronger, cross drilled are more prone to cracking. also consider this, when you apply the brakes it creates a gas that will build up. when the brakes get hotter, more gas is produced which leads to brake fade. cross drilled can only 'vent' when they are not under the pads, where the gas is produced. slotted allows the gasses to be swept outward, away from the rotor towards the wheel at all times. the slots sort of act as a trough for the gasses. me personally, i favor slotted performancewise. but some like the visual apppeal of cross drilled.


