I changed the stockers for EBC Redstuff pads. They do take quite a while to fully break in - maybe 1000+ miles depending on how much you use the brakes. After about 1500 miles, I'd say the initial bite is similar to the stock pads, the dust is at least 75% less, though still not "dustless", and braking power is at least as good as stock. They seem to squeal a similar amount to the stockers or perhaps a tad more. I bedded them once at about 500 miles, which got rid of the squeal for a while. I've been planning on bedding them again now that they are fully broken in. I have no idea what they would be like on the track. I have a set of Ferodos I plan on using for track days.
FWIW, I ran Stoptech Street Performance pads on my 330 ZHP. They were high effort (ie low initial bite), but stopped great, and held up very well at the only HPDE event the car saw. Personlly i like the feel of the Redstuffs better.