I have koni's with the springs from the bat kit. I like it. My car is a daily driver, so I didn't want it to be super low, or to have it ride really hard. The konis provide enough adjustability to make it a competent auto-x car, while not being overly harsh to ride in for a couple of hours. The konis adjust from the top at all four corners, while some have complained about adjusting the rears, I haven't had a problem.
-FD
