When it comes to the vibration, there are many things that can cause it, with no one solution found. As for the play in the wheel - if you can rule out the ball joints, and control arm bushings, then it likely is the wheel bearing. It is a big
on whether or not that is causing the brake dust. It wouldn't be one of the top things on the list.
Pad material can affect the amount of dust that you would get, but it would seem they would use the same pads on each side so you should have the same amount of dust. Are the pads wearing evenly? If not, you may want to check to be certain the slide pins and slides in the caliper were lubed well and move freely.
Black 2000 SSEi, Silverstar Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, drilled 180 degree thermostat, Intense FWI, PCM, shift kit, and 3.4 Pulley. Solid front mount.