Unfortunately some of them actually have less heat tolerance (Hawk HPS for instance). They're designed to create a grabby first-application feel that provides the sensation of improved brake performance so people think they're "sporty". They do that by focusing on mechanical interlocking friction, which is rough on rotors and works at low temperatures, but does not work at higher temperatures because the pad surface melts and can't hold anything.
True high-temperature pads work more via molecular adhesion to create friction (interesting side note: so do race tires!). That's why they need heat to generate their highest friction levels, and why they are so resistant to fade (they rely less on the mechanical interlocking that stops working when the pad surface is melted). But the flip side is they don't feel "grabby" when they are cold. The higher you climb the heat-resistant/endurance ladder here, the more cold bite you give up, because the pad compound focuses more on molecular adhesion and less on mechanical interlocking.
Project Mu, Performance Friction and Carbotech all make good track pads and are worth paying for. For street driving, I don't see a need to pay the premium of those brands.