I don`t thing wordpress is a CMS, it is a blog i think?
I Prefer Joomla!. What do you think? I can't seem to get drupal, do you have to pay for it?
Well WordPress is a blog, but with its pages and templates features, it can technically be used as a CMS (http://www.devlounge.net/publishing/things-to-consider-when-using-wordpress-as-a-cms)
Nope, Drupal is free software . http://drupal.org.