Most flexible CMS
 

What CMS do you use? I used to use PhpNuke / PostNuke but there are so many sites using it these days that they are now percieved as beginners CMS-es.

I have tried Joomla, but the lack of access control management for it annoys me.

NCaster seems interesting - has anyone used it?

I use drupal.org

It provides many modules you can add for different functions. The skin is also easy to customize. I'm so happy with it. I believe you will be impressed by it.