the squeak is nout bad. its just the friction bettween the rim and pads, due to the friction and compound of the bad making i squeak.
oviously if there is no squeak it is better cause there is no wased energy, meaning a more powerful brake in theory. but not always.
mu rear brake used to be super super load. i was manualing down the highstreetcoming up to osme people , pulled the rear brake and the little d in front jumped bout 10 foot in air (well not realy but you get the idea) ending in him running to his parents crying lol. my bad
thanks ian