I've had both Spax and Koni's on my 99 Contour SVT...this is what I've found
Spax give a better, more comforatable ride, even when tightened down...Koni's are harsher, but better for the track...I like the Koni's myself...but it makes the car uncomfortable to drive any distance. I only drive it to the airport and back every week, so it's not a big deal but if it was a daily driver I couldn't take it. The koni's have a better warranty as well.
I did have trouble adjusting the back shock's so I just carved down the knob...no big deal.
I've also just bought Koni classics for my GT6...but I'm gonna vintage race that....replaced the Spax that went after 1 year..just after the warranty...I'm sure that doesn't happen all the time but it sure "P'd" me off.
