I almost bought the Star Specs as they seem to be a great tire and popular now, then I stumbled accross these XS Kuhmo's. Besides being slightly less expensive, the Kuhmo's seem to be slightly quicker for autocross and have have a bit more grip. Here are results C&D had at the Tire Rack track.
http://www.caranddriver.com/var/ezflow_site/storage/original/application/66969af538c4f7c233fc6814a5f2ed7d.pdf