I gone through many sets on my 94 850 Turbo wagon first there was warping then noise. I found the basics to be true:

Never turn your rotors. If they are worn, replace them with the pads.
Never use anything but stock pads in the back or else you will get a lot of squealing.

PBR Metal Masters are a good compromise but they still put out some dust.

BMA in Glendale California sells a German brand of pads and rotors that generate almost no dust and work well. They are also very inexpensive. Still use factory pads in the rear though. BMA's number is 818-240-1233. They ship anywhere and will give 10% off to BrickBoard referrals.

Good Luck

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