Who using EBC brakes?

I used EBC red stuff brakes on my 2002 Firhawk Trans Am at road america. The red stuff EBC brakes says it is for track use but the brakes burned and started to particle apart. EBC said they will not warranty because the brakes were used on a track. EBC brakes are advertised to be used on a track, but now once used on track EBC does not warrtanty. I have pictures of the pads which do not look good but can not post for some reason.

What brakes are you guys using for the track?