encyclo - 12:33 pm on Oct 9, 2010 (gmt 0)

Joomla uses HTML, I assume you mean a static site versus a dynamically-generated website using a content-management system. The choice depends on a number of factors, static websites are fast but difficult to manage, dynamic websites are much more flexible in terms of changing content, but you need to keep the CMS updated (apply security patches and such) and secure.