One reason I dislike the PDF format intensely is because it is so difficult to convert it to another format. Most PDF tools that advertise a 1:1 document conversion usually fail as soon as the document in question is somewhat more complex. PdfGrabber 2.0
is new on the market and claims to perfectly convert PDF documents into various other formats, including Excel, RTF and XML. There is a standard (68,10 EUR) and a professional (102,59 EUR) version available; the latter allows you to also convert multi-column PDF content.
You can download the trial
which randomly inserts the letter "X" into exported documents.