I've got EBC GS on front and rear. The fronts were just put through over 2 hours of on/off track time at IRP (2.5 mile, 15 turn road course) and they were great. The backs have been through about 6 hours of track time and a few thousand road miles. Just a tiny bit of fade, but I was pushing them. I had 2-3 people who were following me who couldn't believe I was braking so late. Can't say too much about dust on the front, but the rears have been a bit less than stock. $70-80 an axle, but I could tell a definite difference in feel and power from stock.
As far as the wear - I'll tell you when I replace them, but there is no noise from them under any use.
Seth
Custom Recaro Seats, B&M, Battery Relocation, Baer 13 inchers up front, KW Coil overs, ATS 17" wheels, SS lines
http://www.svtoa-semi.com