You won't be happy with the Sumitomos or the NT-05s. They are not even in the same league with the Falken or Michelin on a racetrack. The Falkens do get greasier when very hot, but on dry pavement they will run faster times than any of the others you mentioned. In the rain the SuperSport is best, and the SuperSport is also pretty good in the dry, a very consistent tire. I use Falken Rt615K/ Hankook R-S3/ or Dunlop Z2 for Autocross, and I use Michelin Supersports on longer track days...