Like likoma, I keep falling back to WordPress. I’ve spent some time with “real” CMSs like Drupal, Plone, Modx, Typo3 and Mambo, but everything is indeed bloated, too hard for clients to use and a waste of time configurating. (For the mainstream customers like small enterprises etc.)
With the CMS listed above, it’s about downsizing and configurating functions. With WordPress it’s about adding and configurating. I like the latter because it never gets messy.
Heavy CMSs like Plone and Typo3 has it’s uses, but Nasa is currently not in my clientele. When that time comes, I will concider something heavier than WordPress – if there’s no wp-heavy-CMS-plugin yet, of course.
Go WordPress!