Ron Cortez is the best tire guy on earth!!! I'd trust him on his datas on the Hankooks. I would probably go with the Hankooks based on what your requirements are (price/grip/durability).

One thing to consider though......considering how much money you've invested or will invest into the car, would you want to have that investment limited by your tire choice? It always helps me to put my mind frame on race weekends where I can recall instances where I wish I had spent a little more to get that little edge.

Ed Chang
SFR ITS GSRs