I was sold on the Dunlop Z1 Star Spec this past weekend. I worked grid and then poked my nose around between runs at the Philly event. And the one thing I heard from who ever was running StarSpecs was, "I keep giving them more, and they keep on taking it!" And it was a really fast course. I'm pretty sure they only tire faster were a couple of civic's running shaved RE-01's!
TireRack is offering one hell of a deal right now, com'on rebate!!