What is the 'best' Content Management System for low visits?

I need to build a website that keeps the content & appearance themes separate. I figured that a content management system is the best way to achieve this goal. I expect the user base to be hundreds of hits a day. What is the best 开发者_Go百科content management system for:

• Speed (given the low visits)
• Development & maintenance (cost of hiring developers & maintaining the system, ability to upgrade to new versions of the system while keeping my customized code separate)
• Availability of free themes

Check some of these babies out.

• Wordpress or Joomla! (if you're on PHP)
• DotNetNuke (if you're on .NET)
• Pinax (if you're using Python)
• Radiant (if you're on Ruby)

Personally I have had good success with Joomla. Wordpress is also good but I have seen some people have a harder learning curve with it than with Joomla.

I've good experience working with these CMS tools:

• Adobe AEM CQ5
• Interwoven HP TeamSite
• Interwoven HP LiveSite
• SharePoint

These tools are really good and have almost all the features related to Ease of use, less coding or one time design, compatibility, faster development, Good End User Experience, Targetting, Segmentation, Additional API's for integration and much more...