I say they are bad in general.. All their drums and rotors are purchaced in bulk from the same company (Some weird off-beat company) this company they buy from gets all the rejects from other reputable companies, and re-sells them.. AZ buys them, and makes a good profit..
AZ corperate people know that ignition parts (caps, rotors, etc) and brake hardware are consumable and everyone needs them.. They buy this stuff as cheap as possible, to offer the lower price, get you in the store and buy some of those useless accesories..
Otherwise.. After working there for 3 years, this is the jist I got.. They always want you to push their ignition stuff, and brake hardware.. Using that stuff on my own car, no way.. Not unless I didnt care much about the car.
(As a side note, AZ does sell some good stuff.. Mostly engine parts, and the like.. Certainly dont completely shun AZ on all parts.. Just avoid their brakes and ignition stuff)