Earlier this month, Adrian Speyer wrote a great blog post about why he prefers concrete5 to WordPress. Adrian still likes WordPress, but he thinks "if non-technical user content manipulation is a major concern, Concrete5 is the best option."

Some of the features of concrete5 that he loves:

• It's super easy to build with, once you get the hang of things.
• It has fine granular control for user permissions.
• Upgrading is smooth.
• It's extremely user friendly for the non-techincal user once it's set up.
• The Marketplace. There are tons of things free for use with the core Concrete5, including themes and add-ons galore. The prices are more than fair and reasonable. If you are a coder yourself you can sell or offer for free your own upgrades as well.

Read more of Adrian's thoughts about concrete5 on his blog: http://blog.mark8t.com/2012/04/09/concrete5-the-cms-option-you-are-looking-for/