I'm up for new slicks this year as well. I've been running a Radial Hoosier slick for about 3yrs (3 pairs) and the track hasn't been prepped as well as past years and I've lost to many races because of when the track fades. I run a 9x30 slick and I'm going back to the bias ply to keep the traction there.Also they're more affordable then radial slicks.