Mac site

In search of a good web whacker

That’s web whacker, not weed whacker. The latter is taken care of by our Black & Decker Grass Hog.
A friend is looking for a Mac- or Java-based web whacker/sucker program for a project. According to what he’s tried so far:
+ Web Dumper doesn’t work
+ PageSucker stops working while in use
+ Site Orbiter doesn’t save files for browsing offline properly
+ Safari’s Web Archive feature isn’t cutting the mustard, either
The project in question is taking a dynamically-generated web site (which does not output HTML files), whacking/sucking it to a local machine in HTML format, then moving it offsite to another web server.
Please leave suggestions in the comments. Thanks!