im using pro stops from pep boys, they seem to last, they are over a year old now and not warped. i used them in my 03 gmc 2500 hd, did the pads and rotors all around, the pads lasted longer than the stock pads by 10,000 miles or so.

so i got the same brand for my regal.

on another note, see if you can swap tires/wheels, with a friend or family member, to rule out your tires, or just get 2 new front tires, bad tires do all sorts of messed up stuff to a front end.