Not just German, but European brake pads in general are great stuff.I am currently considering the purchase of a used Mazda6 Touring and came here for the intentions of researching the car.
I can attest to the longevity and quality of German OEM brakes as I am coming from owning both an Audi A4 and VW Jetta GLI (current). Up until recently, all of my pads and rotors were factory on the GLI. The fronts are still on the car and I just replaced the rears a few months back. The car currently sits at just shy of 119,000 miles. Since new the car has stopped on a dime and I've never had the slightest hint of uneven wear or buildup, and I am hard on a car. I had concerns about the brakes being on the car for so long and the dealer service checks were always marked as not needing to be replaced, so I brought it up with my service adviser. He said that he has plenty of cars still on the OEM pads and rotors and it's just not something they have to worry about much. I was amazed as every other car I've owned needed brakes replaced much more frequently. I'm about to trade in my car with the factory installed brakes still on the front wheels. It says a lot about the materials used.
Cant go wrong with the Mazda 6, they've really sorted things out and improved tremendously with quality and reliability over previous models. I am exceedingly happy with mine.