CMS Wars - Which CMS' Should be First?

An interesting idea came to fruition from the comments on my popular, WordPress, Joomla and Drupal are NOT the Best CMS post.

The idea was to pit a number of solutions against one another for a specific use case. I think this is a great idea and I'd like to ask all of you which CMS you'd like me to start the series with?

Pitting different content management systems against one another in specific scenarios is a great way to identify the strengths of the various products on the market. Please do not feel restricted to popular products either, the point of the post will be to help identify alternatives.

I'd ask that you please leave a comment below with the CMS' you'd like to see pitted against one another and the scenario and I'll choose one to kick off the series with.

Thanks for your input!