2007 Rav 4 Brake Noise Options

[harrisd]

I have 2007 Rav 4 with 60K miles.
At about 25K with the original pads I started hearing a rough pad growl, just as the vehicle would come to a stop. I decided to get another set of factory pads and replace the original pads. The rotors looked great and there was approximately still another 15 to 20K of life left on the pads I was replacing, but I went ahead and changed the pads. The braking growl went away till I got to about 55K, and the growl started again. I decided to try a different set of front pads and installed a set of Raybestos ceramic pads, the growl started again at 60K. The rotors aren't warped, and for each of the brake pad replacements I lubed correctly and installed the original factory pad shims.
Has anyone else experienced this front brake pad symptom with their Rav 4?