I used Yellowstuff for a few years and found them to perform well on the road and track. However, I had a problem with one set where the friction material delaminated from the back plate. They had only seen road use so hadn't been exposed to significant heat cycling. EBC blamed a manufacturing fault.
On average, they would last only a couple of track days at best and often showed signs of overheating when I changed them. Unlike mmm-five, I am the very last of the late brakers and I prefer short, technical tracks without long straights so brake cooling is more of an issue for me!
I've since switched to Bluestuff and fitted supplementary brake cooling ducts as well as solid bushings to the calliper bolts. This has improved the consistency of the feel of the pedal and so increased my confidence in the brakes. In combination with KW Clubsports (which eliminate the significant pitch under hard braking) this by has markedly shortened my braking distances.
One important step to reduce brake temperatures is to switch off the DSC so the car isn't braking individual wheels every time you corner hard.