Several manufacturers are touting the shocking dampening qualities of their, usually performance-oriented, bikes. Scott has their SDS, Cannondale has S.A.V.E., and I am sure there are others. What exactly do these systems do, and what are the negatives or trade-offs to the average rider. Cannondale presents S.A.V.E. nearly as a "have your cake and eat it to" design, which is not generally the case with anything. Not trying to tample any bike company - just trying to understand the tech against performance.