Having the best designed website only is not the only factor you should be considering because, web design and web development is getting complicated. There are alot more that a well-designed website. If you are interested in developing search engine friendly Web sites with a content management system, you should be taking a close look at the open-source Drupal CMS, instead of WordPress, Joomla, or Plone and many others out there.
As business itself becomes digital, the benefits that a widely adopted, open source technology solution like Drupal can bring to organizations today are manyfold, but they can be boiled down to a few salient points.
There are many reason for choosing Drupal and help your business :
Faster and continuous software updates (from the active and innovative community)
Faster time to market. Many existing modules ready to be used or develop another quickly.
Focus on your core business because you can rely confidently on the CMS
Best-of-breed, integrated solutions
Improved quality, security, and accountability