when you you replace the pads do you resurface or just outright replace the rotors? i have about 18k on my front rotors & pads and i'm considering switching everything to mintex pads (or maybe just the fronts). i have had good experience with this brand and it really helps with the brake dust. the crud is baked into my existing factory alloys ('93) and have already had an extended "simple green" cleaning session with them . i am about to get new wheels and tires and really want to minimize the dust factor.