Carbotech XP10 front XP8 back - my choice BUT

ltullos

I've been using the Stoptech sport pads for several years and over 20 events. I typically change fronts after every other event & rears every 3-4th event (all depending on track and duration). I know there are better track pads; but I've never had an issue with any kind of fade or stopping force. Hopefully I will eventually when I become a much faster driver. Best thing is that I can use these for street as well without squeal or significant brake dust.

I suggest you give them a try and only go to a harder pad when you find that you need it.