I replaced mine a few months ago with power stop pads and their slotted/drilled rotors and couldn't be happier, stopping is incredible, got them off autoanything.com, huge improvement

 

I have ~62k miles. I just replaced the rear pads with Akebono ultra premium ceramic pads maybe 5k miles ago. They could have gone a little longer but I was doing brake lines anyhow so it was a convenient time. I can't tell a big difference in performance. I have the same pads for the front when it's time, but those front factories look like they could go another 40k+ miles.