After some time running my site using Joomla CMS, and testing WordPress for my photo blog, I have moved my main site over to WordPress too. Quite simply WordPress is about as simple as it gets for a CMS, very easy to install, config and update. The other big advantage is the massive theme and plugin selection which is very easy to access and install.
A quick word of thanks to christian_gnoth for his Joomla/Mambo To WordPress Migrator, which made the process of migrating my (admittedly minimal) number of post over, with zero hassle.
Now maybe I should try and actually write some content for a change!