Well, it’s been a couple of months and I can only conclude that I never got around to actually completing my comparison of CMS systems. I got side tracked a few times by other activities, and in the end I made a very simple choice. I got rid of Joomla on my company site, because it contained too many features for what I need. Instead, I spent one afternoon and one evening creating a very simple web site based on the CodeIgniter framework, with a backend that allows me to update pages and upload content if necessary. All tailor made, and perfect for my needs.
Check out the front-end results on http://www.delphino-consultancy.nl.

Sorry to those expecting a CMS evaluation, I can only conclude all of them were too bloated for my purposes.