Perhaps even the Kumho Ecsta SPT ???check out Tirerack. They did do a comparison test with it
If it was me, I'd take a ASX over the AST.
Since my 6 is approaching 30K, I am looking at all-season performance replacements as well. Looked at Michelin Pilot Sport A/S, Avon Tech M550 A/S, but have never considered Kumhos (or Sumitomos for that matter). Being an older guy, I tend to say with the Michelin, Pirelli, Dunlop brands. Any thoughts anyone has would be great. I am looking at 225/45-17 as well for these to get a slightly wider look and for better traction. Want better handling and steering response in wet and dry. Willing to give up SOME ride comfort and noise.good looks for the update.....