[kdanie]

Who doesn't like the looks of cross drilling? Me! That's becuase I don't care for the "WOW" factor if it doesn't help. Cross drilling does not cool the rotor, when it is turning almost no air can go through the holes! The holes were intended to get rid of the gasses pads emit when heated by hard braking that can actually cause the pads to be forced off the rotor. Here's the problem with holes....they are blocked on the opposite side by the other pad (on solid rotors) and the gasses really can't go anywhere! It does work on vented rotors. Slots are the way to go if done correctly so that there is always a slot under the pad with an exit for the gasses. Drilled rotors often crack between the holes in hard use, slots are less likely to fail.
ken