-1 nowt wrong with EBC drilled/grooved. I ran a set to over 40k miles before they started to die thru old age
theyre really not great on the track, the drilled discs crack very easily ive been hearing
The problem is people use them on the track full stop. They are fast street discs, not track discs. The Zed is a heavy powerful car, it needs proper discs on track. I found EBC ok if you are not too heavy on the brakes on track, but any proper abuse and you will knacker them, Ultimax are even easier to warp.