I have the stock 255/40s up front and the kdw2s are a perfect compliment out back. End/
I guess 90% of those comments came from people that don't know anything. Every street racer I've ever talked to puts the kwd2 up there with one of the best street tires for a performance car. My personal experience with my car and several others has been a positive one.
I don't mix tires.
I had kdw2's that came on an old neon I bought and hated them.