Excessive brake dust and vibration / noise

Brake dust is typical after 3000 miles. You can get low dust brake pads, but they will have trade-offs in brake feel or pad longevity.

Low pitch groaning noises are typically vibrations resulting from contact between the brake pad and brake caliper piston. There are products (ie 'Disc Brake Quiet') that are intended to be applied to the back of the brake pad (between the pad and piston) to absorb this vibration before it manifests as that annoying noise. If that's not it, you may want to have your mechanic re-bed the new hardware.

Unclear, what is the question .Brake pads make different amounts of dust. "Organic " pads make the least, I have over 80,000 on some and have never seen dust. I had a 2004 Nissan Titan , it made a lot of dust. The dealer replaced the pads at 30,000 at no charge and they did not make dust any more ( drove it to 130,000 miles).