If they are eating the rotors it sounds like(to me) that you are getting max stopping power. I'll trade a new set of rotors every 20K miles for that.
I'm running Ferodo pads......I LIKE.
The pads on my Strom are due for replacement and the rotors are still in good shape with the OEM pads at 77,000 km. I'd like to keep the rotors in good shape and am considering the Sixty pads for the price.