First, I am quite anal about correct torque on the lug nuts. Before I installed the SVT fronts on Sofia, I had a set of KVR X-drilled rotors, No problem in 20K mi or with their carbon pads. The slotted SVT rotors I got from KKM ARE a class part and no warping yet. The plain Brembo rears I got from KVR needed a slight trim out of the box. In this "save a nickle for the shareholders" era, don't think ANY brand is totally reliable.