Mike,
LOL man.
5K on the rear pads? You must really be heating up the brake fluid! Move to some flat lands and you'll get a lot more miles outa em. Or don't ride WOT all the time! Never have I changed pads and not noticed one with more wear than the other. At least our pads are under 20 bucks per axle (organics that is) and a breeze to both inspect and change. I stopped with the miles thing long ago...
