It's time to replace my pads and rotors. I was looking at the Rockauto site and there must be no less than 50 choices. I would like to get materials that have excellent bite and hopefully do not leave much residue on the wheels. I noticed there are towing, heavy duty, and police grades. Does anyone here have any experience with these products and can make a recommendation? I have no problem spending a few more $$ for this upgrade. Thx.