I was quite impressed by Plone/Zope because I just doubleclicked the installer on my Windows XP box and it works within minutes (Python is part of the installer). All other solutions need an prepared enviroment. In my company a external supporter uses Zope, so I've got an idea of how much can be done based on such a solution. It's not especially the CMS I find useful, it is the extensibility. After all I have to look at Mason/mod_perl and the above noted AxKit (I like XML) to get a better overview.

best regards,
neniro