I still have the original struts on my csvt but I have had Koni's and Spax before. I really liked the Spax. The koni's are way too stiff. The Spax feel like the oem's until you push them, then they really perform well. they are also externally adjustable. set them low, and when they wear just turn them up, like new again. When F1 used normal shocks years ago all the better teams if not all teams used Spax exclusively. They really are a great product. I can't beleive the difference in prices. I payed more for the Spax than Koni's were selling for.