I recently went through the process of selecting a CMS for a client. ProcessWire, was the ONLY one I looked at and thought, "ok, now this makes sense." In the end, I couldn't use it because it doesn't yet support repeatable content sections in the admin. Sadly, had to go with Wordpress.
In addition to repeatable fields, they're planning a versioning system, staging states, and even a forms builder. Not exactly earth-shaking for a normal CMS, but these will open up all sorts of possibilities for ProcessWire.
