I used the DBA 4000 series heavy duty rotors on the last change along with Remsa pads very happy , I did make sure to clean the hub surface as even a small amount of dirt can cause the discs to be out of shape so to speak from day one this happened on the previous set . Apparently if their is dirt in between the two surfaces you will get incorrect pad transfer during the bedding in phase and it gets progressively worse over time .