Brake Noises, Dust, etc.

Truck just went out of warranty. The usual brake shudder (pulsating) started up again (Dealer did the TSB 10K miles ago). So, as suggested here in this group, had a NAPA facility install their pads and heavy duty rotors. Whew, black dust is heavy, but I am also getting a noise while driving, that sounds like a bowl of BBs being spilled out on glass. If I tap the brakes, it stops. It happens only occasionally, but is this something to be concerned with? Also am getting a slight squeel just before coming to a full stop, but that is curable by spraying the dust off the rotors, at least it works for a couple days. The NAPA service advisor claims these noises are just something in the world of brakes that you have to live with, like the constant black dust? Thanks.