Stock replacements are fine, but pricey. I went with Brembo rotors and RedStuff reds pads. They were a little noisy at the beginning but now they are perfect. The pads grip slightly more than stock pads. I agree with njaremka, you'll pay much more for cross drilled / slotted when you would only see benefits on a track. Montgomery Mazda has stock replacements online, but shipping can cost you depending on where you are. You can find aftermarket brakes pretty much everywhere on the net (RPM store, trispoint, etc).