I have had 4 pairs of heatsink blues, amazing power, but mine seamed to wear down in 2 weeks :( iv had my plaz pads for about 1 month now and they are nearly fully gone aswell :S lol
I grind my rim WAY too much! lol, 12 times in 4 months :S lol and this is what has just happened:
(shit pick i know, but i cant seam to work my camera properly :P :- ) lol
You get shat i mean though... i have a massive crack in my rim, and it bends each time i back hop on it
P.S sorry for size of image :P
EDIT: sorry, forgot to say, get some plaz pads on a medium grind, and they should be awsome if set up properly! B)