Had them, hated them. Like JGheen, mine started a loud squeal a few months after installing. I actually had another driver motion to me to roll my window down, when I did he suggested I needed a brake job because of the squealing.
I pulled them in less than a year. I'm running Akebono's Ceramics now and they are dead silent (approx 10 months of use) on Brembo rotors. In all fairness, I also added larger rear wheel cylinders at the same time I changed pads. If the Hawk's had a little help from the back brakes, maybe they wouldn't have squealed either.