Hello everyone. I have a 1999 2.8 Quattro A6. My rotors are beginning to warp and I'm going to attempt a rotor and brake pad change myself. Can anyone suggest a good quality, basic brand of rotors and pads? I've heard from other forums that the pads must have the microchip in them. Which brands should I look at to ensure I keep everything functional? Also, does anyone know of a good online store to buy the pads and rotors? Thanks for the help.