Dynamic but cache content
All of my content is dynamic, it's generated using document object model (php DOMDocument) and it is better as dynamic, as much of my content is database driven with functions and classes that generate the code.
To cut down on server resources though, I cache the hell out of my site via APC. When a change to database is made that impacts content, impacted cached content is killed. When a page is requested, it uses cached content if available - if not available, it generates content, caches it, and then uses it.
Really works out well that way.
With respect to CMS - I use my own because too many of the pre-packages ones have had serious security holes that were the result of just plain sloppy code. By using my own, I avoid other peoples sloppy code and my site is not an instant target when a new hole is discovered in one of the popular ones.
