Paperport is Great !
I Think PaperPort is the Best Organizational tool after Outlook ( Synced with Palm or Pocket PC). I Have My Tax forms all Scanned in there, as well as the First Page of Every Bank Statement ( Requested often , as I am Self Employed) . I Have My Vendors license and a Blanket Certificate of Exemption ( which Get Faxed Often)
In Fact, I just used it earlier today to Scan in the "Incompletion Triggers” List from My GTD Book, which I OCR'd to Create a Word doc for My Pocket PC.
It also has a "printer " Feature, where you can capture anything from the Web (Receipts!) or Email to Paperport, AND the Newest Version also let's you save files as a PDF .