What car are they going on? It's my impression the KD's and SuperCars are similar in terms of overall dry grip, not really compromising for wet handling, and fairly short tread life. The Supercars have a 220 treadwear rating, the KD's a 200.
But if you don't put a lot of miles on the car, and 10,000 miles means 5+ years, then a short-tread-life tire might be better. That way they don't last so long that they are old and hard.
That said, the SuperCars seem like the ultimate street tire upgrade for a Corvette. If they cost the same I'd go with them no question, but I'm wondering which is really more worth the money, and am leaning towards the g-Force KD's. The 315/35 SuperCars are freaking expensive.