As has been said numerous times, in order to get the full benefits from hi-tech shocks you also need to dial them in. If all you do is install them and figure that will be enough there is a whole nuther level of performance waiting to be found. See section #2 of GSOIA in the Hall of Wisdom.
An illustrious quote from vermin:
"I lie to myself because I am the only one who continues to believe me."