Agreed, best bang for the buck Pad for track use. You can make them last forever and abuse the hell out of them. I tend to be a bit easy on my equipment, so I have gotten a good deal of use out of mine. I plan to put them back in the car for at least two more track weekends next year.
However, I will not be using these for autocross next season. I DID have them in the car last year, and they are not what I'm looking for for Auto-X. Dean, I actually don't like the initial bite for autocross, and they are miserable when cold IMO. Carrie and I would drag the brakes from grid to the starting line in our early runs last year, or else we couldn't stop without putting a foot through the floor.
Definately recommmended for an affordable safe track pad though.
For Auto-x, I'm running Porterfield R4-$'s