i dont know too much about brakes, except how to change the rotors/pads and bleed etc.. but i replaced my pads/rotors, a few months ago, and im getting a crazy squeal at the end of my stops. I was thinking of jsut taking them back and getting a better brand. but ive had a few people tell me to do a few things to stop. i bedded the brakes properly...

disc brake quiet on the pads..
sand paper on the pads to get the glaze off
re adjust the tabs
take the pads back get better ones..
re grease the back of the pad
spray brake cleaner on the caliper

they are just a set of regular pads, but its just a regular car so i didnt think to get anything special.