Wagner Brake | Corrosion Resistance on Wagner OEX and Rotors

I used to love Wagner pads until I put them on my 2004 Trailblazer. They don't stop are well as Bosch pads. As soon as touch the brake pedal. The Bosch pads start to stop.

I did use Wagner brake pads Thermo Quite on multiple occasions, good and inexpensive pads, few days ago I bough the front rotor from Rackauto , also Wagner, and in a few days after installation it starts developed rust spots. Where the promised anti rust protection. Driving the car is not removing these rust areas, since they are not in the places where the pads touching the rotor, a bit off disappointment. Never had this with other even lower priced brands