My car is set up with stock springs and a 24mm tubular rear sway bar (aussie bar). I also have the konis and the Falken Azenis tires. (STS)
My fastest setup has been full soft in front and full stiff in rear with the tires inflated to 41 or 42 psi front and rear. Setting the konis up this way makes the car very tossable in transitions, and it doesn't have to be driven quite as carefully to avoid understeer. The aussie bar makes it quite neutral in steady state cornering.
Any time I set up the front stiffer than the rear, all I get is push, push, push, unless I am extremely careful on turn in. It also exhibits some spooky handling characteristics at higher speeds. I recommend never running the rears softer than the front.
Your fastest settings may be different since everyones preferences and driving styles are different.
This setup is also very neutral, and more importantly, easy to drive (predictable) on a road course.
