just re-read your original post. the pagids are probably your best bet if you plan on going on track and they are supposed to be quite friendly on the discs( for race pads ). there's plenty of info on the net. you just have to watch when they are cold as they tend to be a bit grabby and can be a bit noisy.
i switched back to my stock pads for winter as i don't plan on going on track until the summer. wish i hadn't bothered. nowhere near as much stopping power and if anything they are squealing more than the pagids now.
having said that you could try the yellowstuff pads at a fraction of the cost and be the first to give some feedback.
let us know how you get on