Here is a drilled and slotted rotor. Granted, it is for a G-body (Daytona) but should be okay as a reference. Notice the sticker with the L and arrow.

These are Baer so they are good quality. It took a while to get used to them. There is some different vibration and whatnot than a regular disc. Now that my pads are set though, it isn't as bad (it took a bit though). I really don't care if they eat pads because I love the way the car stops. This car doesn't have ABS. The action is real linear. I can go in deep and still press harder if I feel I need to.

It is my daily driver in terrible ATL traffic, so stopping frequently and hard is a regular event.