i had Axxis Ultimates on a WRX, they had great initial bite but i didn't have much time to use them because i traded the car in 5 days after getting it back from the upgrades.

i have Hawk HPS pads on my STi. they're a good all-around pad, dust doesn't get too bad, but i think i'm going to get the HP+ next, just to try to get something more aggressive (i doubt i'll need it for daily driving, though).