I have ridden Galfer pads on Braking rotors this last year on my Juicy 7's.
Noticably more power in the brakes. Modulation is still very good too.
At first when they broke in they where the most powerful brakes I have ever tested. Luckily they have calmed down a bit!! Now I have enough power for DH and modulation enough for trail and technical, steep riding.
I ride these on my Turner RFX with 203mm front and 185mm rear.
I weight approx 190lbs and ride a 35lbs bike.