I am going to replace mine with the Bilsteins B46-1738-H1 and B46-1739-H1.
From what I hear they are the closest in stiffness to the stock ride. I really drive my VX hard and I want to keep it as firm as possible, like stock as I can.
I recall that some people who have the Ranchos, even on the hardest setting is not as stiff as the stock ride.
But then again I really have no clue as I have the stock shocks in my VX as we speak. But as soon as I get the new shocks I will let you know my thoughts.