I'd recommend one of the following (very brief description!):
Ferodo DS2500 - Better than factory, much much much cheaper, great all rounder and very quiet, sprint use yes, long track use may struggle.
Carbotech XP8 to XP16 - Very good performance pad at a very good price, need to be careful and spec the correct temperature rating though, there is a reason why there are quite a few different compounds available, can be quite squeaky, start low-ish and work your way up the range, don't over spec.
Pagid RS29 - Very expensive but extremely good, relatively low noise, VERY wide operating temp, great from cold and great when stinking hot.
EBC (any compound) - Not a fan.
Other pads ARE available but I wouldn't comment without long term personal experience of them.
Interested to hear of the Hawk pads from the states (60 or 70s, always have a good rep from these guys) and DS3000/3500 experience (I imagine might be a bit poor from cold and daily street driving)