A couple of years ago to reco my brakes I decided to fit new
RDA rotors (stock, not grooved or drilled) to my earlier sdub with the smaller brakes.
At the same time I also fitted
stock Toyota pads and put a kit thru the calipers.
All I can say is the brakes are still smooth and powerful after 25 k kms. Absolutely no trace of shudder.
All rotor surfaces are still smooth and even, both front's and rear's with very little pad wear.
What more could you ask for?