Personally and I am not expert, I would get the Ferodo DS2500s or stick with what you already have ie. the Textar ones. I track my car two to three times a year at the Nordschleife and just change the front pads to RS29 for the track. The rears remain as DS2500 for track and road.
I tend to be quite mechanically sympathetic when tracking in that I do two or three laps and then rest allowing the engine, brakes and tyres too cool down.
More aggressive pads like RS29s are not only more expensive but also mean that you will be changing your discs more often. Fuchsrohre an old M3Forum member that many will remember from days of old was one of those who said there was not even a need for BBKs like AP and Brembo (track incl). Whilst I am not in that school of thought I am not sure an aggressive set up as are RS29s, is required for road use. RS29s are best and come into their own when hot and well used (constant use as opposed to worn down) compared to an OEM set up which may fade.
Others will be along I am sure but for road use unless you have money to burn why not stick to Textar or DS2500.
Failing that I am sure you could pick up a second hand set and give them a go. I have an old set of fronts (RS29) which were on my APs that are down to the wear markers that you can have gratis if they fit in a Brembo set up (look up my post in the technical section a month or so ago). I am not sure if that is workable. I do remember when they were new nearly hitting my head on the steering wheel due to the firm bite but then the discs were newish too.
Pip
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