I have'nt tried many, but mainly because I'm poor and can't afford $500 a corner.
I had Bridgestone Potenza G3 on my old wheels (came with the rims). Tried it on track, wasn't too bad, but I found it shocking in the wet.
Now I have a set of second hand Dunlop Sp3000 (got for next to nothing) or what ever that came out of the police cars. I was quite surprised that how well it performed at OP, considering it only had 50% thread left AND I had it on the front wheels AND I was pushing it soo hard, not once did it understeer. VERY plesantly surprised.
I have Toyo Teo I think, at the rear. Brand new, and the cheapest out of the Toyo range. Can't say much, as it is the rear wheel, all of them have broken traction at some point or another but I found it to be ok.