You state "a June study by AIIM claims users are still frustrated by the limitations of enterprise search", yet your review finds the old enterprise vendors, the ones likely causing the user dissatisfaction, as being the top rated search providers? If these guys are so good, why are nearly half the user dissatisfied?

User satisfaction is an emotional measure, and should be considered along side scalability, security and ease of implementation as key requirements. But, I never read a search experience survey that asked me how well the system scaled, or if the security works. So, maybe the search experience, and confidence one finds in a brand name should actually be higher priorities?

Did you actually put these products through a head-to-head evaluation? Did you include end users in the evaluation, or just IT? I would like to see how the 19 vendors left out of the evaluation would rate... if only they would pay to play