Dr Diff FORD rear disc brakes....What replacement pads have you tried?

I have the pads that came with the kit I bought and installed in 2006.
I recently changed to drilled and slotted rotors front and rear...

603 F.JPG

456 R.JPG

439 R.JPG

I just replaced the rotors in back and retained the existing calipers, pads and mounting brackets.

I saw my pads started chipping away after bedding in the new front pads.

22 5 X.JPG

22 5 Y.JPG

22 5 Z.JPG

The Charger is not drag raced but I do run it pretty good on the street. I want good brake performance from it but don't need the type of pads that have to be hot to work.
I decided to try a Raybestos pad that is a hybrid of semi metallic and carbon metallic.

617 ZC.JPG

617 ZE.JPG

617 ZF.JPG

I recall Rick Ehrenberg claiming that in most cases, the darker the pad, the better the bite.
Currently, the car stops okay but not "excellent".
I can't get the car to skid except on wet pavement or on dirt. I don't want a touchy brake system that locks easily.