I believe the controversy with the 205/50-15 RE010s is that the are built as front tires for the NSX, and have a seperate bias depending on L/R sides.

Just checked TireRack, the Yoko ES100 is 195/55-15 is only $57 ea vs the RE010 @ $123 ea. I'd say the Yoko is a lot more bang for the buck!

205/50-15 in ES100 is $72 for comparison.