Can anyone recommend some good PDF compression software? Preferable
open-source or low-cost. We're scanning archival collections and the PDFs
can be quite large for a single folder. The folder may be thick or thin,
and contain a mix of text and images. We've fiddled with various Acrobat
settings for getting the file size down, but we haven't found a good
balance between quality and file size. (Plus, these need to be OCR'ed; so
far we've been doing that in Acrobat.)

We were looking at LuraTech PDF Compressor, but the cost for an enterprise
license is pretty high. It did do an excellent job though.

Thanks,
Nathan