alternatives to wordpress importer plugin

The WordPress importer tool keeps crashing on me... stalling and only importing a small portion of the content.

Any suggestions for surefire alternatives? Have tried three other plugins and they're all sucking at importing a few hundred posts. (Wp All Import, JC Importer, WP Advanced Importer.)

Wish WP would get there act together and fix their plugin, but in the meantime... suggestions from the WPMU pros?