Piston Slap: Deep-Sixing Unknown Friction Materials?

TTAC Commentator tonycd writes:

Hi, Sajeev! I’m a long-ago occasional TTAC contributor, occasional B&B pontificator, and longtime admirer of your column, with a question of my own.

My brother just picked up a very used ’09 Mazda6 Grand Touring V6. Lotsa horses, in need of brake service to rein them in. He’s hearing and feeling a pulsing through his brake pedal, sort of a low rhythmic moaning tone. It could be wear indicators, but more likely it’s a warped front rotor. Either way, he’s pretty confident he’s going to have to replace all the friction materials, including the rotors.

Which leads to my question: What’s a not-crappy brand of brake parts? He doesn’t want to expend all the labor on replacement, only to have them immediately warp again the first time he heats them up (which he will – especially with 274 ponies, he’s an, er, enthusiastic driver). Everybody knows Brembo, but who else sells quality?

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