A cms list by aj. with his Experience.

List brief below.

Wordpress - Free/Open Source (PHP)
Key Features: Standards Compliant, automatic feed generator for almost everything, comments, user registration, mass amount of themes and plugins, bookmark and link management.

Movabletype - Free/Paid Licenses (CGI)
Key Features: Multiple database support, activity feeds, spam protection, extensive plugin and theme lists.

Expression Engine - Free/Paid Licenses (PHP)
Key Features: Built in mailing list and manager, comments, captcha, built in hit tracking, multi user system, member groups, robust template system, decent amount of plugins available.

Textpattern - Free (PHP)
Key Features: Unlimited site sections, browser based file upload, built in search engine, xml feeds, unlimited site authors, multiple languages.

Simplelog - Free (Ruby on Rails)
Key Features: Elegant administration interface, tagging, comments with spam protection, quick search with boolean logic, multiple author support, automatic pinging to Ping-o-matic, RSS 2.0 feeds, permalinks.

Radiant - Free/Open Source (Ruby on Rails)
Key Features: Fast loading, simple admin interface, custom template language, flexible site structure, page caching, custom text filters.

Mephisto - Free/Open Source (Ruby on Rails)
Key Features: Mephisto is the Wordpress for Ruby on Rails. Theme uploading and editing, “overview” feed, asset manager, multiple authors, great looking backend design.

Symphony - Free (PHP)
Key Features: Modular system, XSLT template system, clean url structure, clean admin interface.

Drupal - Free/Open Source (PHP)
Key Features: Clean urls, expandable modules, personalization, searching, polls, multiple users, threaded comments, built in news aggregator, caching, and nice collection of themes already available.