I'm using the stoptech pads myself. Initial bite is fairly weak as has been pointed out (not really any different from the stock Track Pack pads, that I was able to see), but that may have an upside, namely that you can very finely control the amount of initial braking, which can be useful for making small rotation corrections.
MOT is about 1300 degrees, with a nice gradual falloff after that, so it's good for mild to medium tracking on street tires. You will get some fade with smooth rotors (e.g., the Centric ones, or the stock ones) even with brake cooling once you're pushing hard enough around the track, so if you're at the point where you're regularly getting fade and it bothers you, then you should be using a more track-oriented pad. An upside is that the rotors tend to last reasonably well with them, and I'd rather replace cheap pads than (more) expensive rotors, especially when rotor replacement is more involved.
For the OP, since he doesn't like the bite of his stock pads, the Stoptechs simply aren't going to do it for him.