A the moment, I am running EBC YellowStuff on the road racing track a well as on the street (I had to replace pads in a hurry and the EBC's were readily available).
They replaced Stoptech performance pads, so I can give you a comparison:
Brake Dust on Wheels:
About the same - as both are aggresive pads
Too early to tell
Stopping on Cold Rotors:
Stoptech wins, hands down!
Stopping on Hot Rotors:
About the same (it's early days)
Noise and Chatter:
Stoptech were always smooth and quiet; EBC Yellows can be noisy, especially on the street
When these pads are done, I will probably go back to Stoptechs.
BTW - a great source for all things brakes for our cars is from Dave at Zechausen Racing