You guys need to diversify your obsession portfolios. Here are some ideas:
Brake Pads: Semi- metallic, ceramic, carbon fiber, titanium?
Brake rotors: Chinese vs. N. American?
Brake fluid: flush vs. no flush
Coolant: G-05, dexcool, OEM?
Parts: OEM vs. NAPA, Carquest, Autozone,Advance, Pep Boys????
Wax vs. Sealant??? Zaino vs. the world?
Repairs: dealer vs. independent???
Additives: None vs. a gazzillion choices.