Greg, dont mean to hijack this thread at all. But i like to help out my fellow NX owners.
I have owned and run sets of the Axxis Ultimates for my NX back when I was autocrossing it in the summers. This is not a selling point over the stoptechs, as if greg feels they are better I trust him.
Anyways.. I LOVED the axxis ultimates. They will make a lot of dust, but they stop great. I would be slamming on the brakes hard from 70 mph to 20mph at a very tight 180* hairpin at autocrosses and they held a season of abuse as well. I saw that Greg had them in stock, and id like to pick up a set for myself even. If you are looking for something proven and dont mind the dust ( a very dark grey metallic dust, will clean your wheels weekly/bi weekly).. definitely consider the Axxis pads.