[ALUG] Linux speech recognition software recommendations?

Hi all, Has anyone used any speech recognition software in Linux (FOSS/closed-source/freeware/commercial etc) that was of sufficient quality that it could be used to dictate a large document, or many small documents, with reasonable accuracy / least mistakes? If so, could you please let me know which software it is? This page, http://en.wikipedia.org/wiki/Speech_recognition_in_Linux , lists some solutions. Is anyone able to offer their personal experiences and recommendations for any of those? Thanks, Srdjan