[CentOS] reasons for using CentOS in business environments

My apologies if this question has been previously answered, but could
anyone here provide me with resources that I might use to help build a
case for exclusively using CentOS in an enterprise environment?
(Approximately 200 servers)

Long story short, I've used a little of everything out there
(Gentoo/Debian/*BSD/Slackware) and have a fairly good overall strategy
of how they all work (all of them have lived on my laptop at one time
or another over the last 10 years or so), but I'm now looking for
solid business reasons that I can present to the CxO types of a
company to show them that CentOS is probably where they'd like to
look.

Reasons thus far I've come up with include:

--free *and* "fully" (at least, in my experience) compatible with RHEL
--fairly stable (I don't have problems unless I start mixing repos)
--yum packages (almost as cool as Debian! Ok, I'm biased...or maybe I
don't know how to properly use yum?)

Any other suggestions / tips I might add to my list would be greatly
appreciated!