also, ideally it's nice to have a laterally rigid car in both front and back, but when it comes to FF cars, you definitely want a rear stiffness bias, just to counter some of the understeer tendencies of a FF car.

that's not to say you want a sloppy F and a stiff R, either. Some people have been stiffening the rear and taking out the stock sway in front, and though i hate understeer, having scrubby drive/steer tendencies in your drive wheels is also no good.