The only thing I can complain about is the Kumho 712s need to be driven differently in the rain than in the dry. The 712s loose traction if you don't keep on the brakes long and dive deeper into a corner before getting on the gas.
But for the best traction I would go with Falken Azenis Sport
Ran them the whole year for autocross and they are awesome tires
Here's my list of good performance tires:
BFG KDs
Falken Azenis Sports
Kumho 712s
Yokohama ES100
Yokohama A520 (noisey as they wear down)
Toyo T1S
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