I'm going to give it Cool. I watched the episode of Top Gear about the old Exige S and how they were saying it was uncool because you'd end up saying stuff like "oh it's practically a supercar!" Well, now it's not "practically a supercar", it practically is a supercar. It hasn't been ruined by sticking a bigger engine in there - it's simply grown up, with that supercharged V6 giving it some of the top-end speed it was missing before, and probably a better sound too. Before, it was sort of sleek and fast-looking, but that four-cylinder sound, aggressive as it was, was a possible giveaway that it was a miniature in (straight-line) speed as well as stature. Now, though, it has it all - the power, the sound, the speed, the looks (sort of)... it just sort of happens to do without a lot of bloaty luxuries, and to still be very small, so it's still really lightweight.
Why not SZ? Well, the looks. As insane as it sounds, the roof needs to come down another couple inches for this car to look truly sleek - it still looks sort of like a pod sticking up above the beltline. And from a certain point of view it that might not even look too bad - it still looks like a racecar, which is kind of cool. So it might actually be Sub Zero after all.
