OEM Pads. Centric Premium OEM equivalent front rotors ($52 each @ RockAuto), stock rear rotors.
Just did the replacement last month at 60K. Front pads still had something between 1/3 and 1/2 thickness left, rears were still 2/3-3/4 remaining. Only did the swap because I got tired of living with a "warped" rotor, most likely warped the last time I let the dealer rotate the tires a couple of years ago. Otherwise, original front rotors only had the barest hint of wear.
-Brent
rotating your tires wont warp your rotors....so that wouldnt have cause the problem.