I've been dissapointed in Adobe's slow evolution of Bridge into a full image management app. I have tried IView and Portfolio and ended up less than satisfied with either app. I now just manage my files on my HD's and use Bridge which is slow, to navigate.
Aperture looks very promissing and has some features that I would love to use like the book layout options, "Vault" system for backing up files to external HD's which I like better the making backup DVD's. I have been waiting for a "Pro" version of iPhoto and I guess my wait is over. I just hope the RAW converter is fantastic or at least better than CS2.
Keith