I hated gatorskins but then i have this strange requirement....ie tyres should have at least some grip when it rains.....
Michelin krylion carbon would have been my number one choice, but they have replaced them with a new model (pro race endurance or somesuch ) and never having used them i feel i can't comment = but i will be trying them in the next few weeks, and if they are anywhere near as good as the old ones there simply the best winter rubber available.