True dat on warped vs buildup/change in section thickness.
Back to the ops question. You'll get good life out of OE spec pads and rotors. You should upgrade if you're roasting your brakes (either upgrade vehicle or upgrade brake system components).
I recently did pads on both the car and the truck in my sig. Opted to go with EBC ceramic pads. Red stuff on the car green stuff on the truck. I can't comment on longevity as both have less than 20k mi on them. But the braking power is at least as good as OE semi metallics and the brake dust is greatly reduced. This is a big deal to me and I'm sure others who keep their rigs clean. Where the OE pads would start showing dust on the fronts after only a couple days, the ceramics take a couple weeks of driving before they look like that. It is very noticeable.
Also no noise from the brakes.