I have no experience with the "factory KYB's" as mine had 134k on it when I bought her and they were shot as my VX was bouncing all over the place. I installed the Rancho 9000XL's (RS999215 & RS999214) back in October and what a difference. I have the fronts at 8 and rears at 7 and feels OK. My only complaint that I still can feel a little bounce but do not know if it is the normal short wheel base (IFS front/springs rear) feeling without comparing with another fellow VX'r with factory KYB's and/or Bilstein set-up. I also sent in my receipts as Rancho had a promo for getting the new Rancho myRIDE wireless remote control tuning system so I will see what that is all about when I receive the "kit." More to come....