http://jstahl.org/archives/2010/01/19/plone-4-three-times-faster-than-drupal-joomla-or-wordpress/
What swayed me?
Security
http://plone.org/products/plone/security/overview
Security Metrics
http://plonemetrics.blogspot.com/2009/04/plone-security.html
Salient Features
http://plone.org/products/plone/features/3.0
Plone goes further than any other CMS in capability and extensibility.
Yet, in spite of its complexity, it is SIMPLE to use.
The Plone ecosystem is rich and active with Plone 4 now in beta 4 for which I am doing extensive testing.
Take a look at my site, which is Plone 3, Dana and see for yourself.
I wouldn't kid you.
