A better value would be Falken Azenis if you have a seperate set of rims for the track (almost no wethandling with this tire) or Yokohama AVS ES100 if you also use your rims or car for daily driving.
If money isn't an issue, the S03 offers a bit more grip but it costs about $40 more per tire than either the Yoks or the Falkens. The stock RE010 is an overpriced, underdurable wunderkind.