Although Red Hat's commitment to providing long-term security support for packages is extremely commendable, the real world unfortunately moves somewhat faster, and this often results in many packages becoming increasingly stale over the lifespan of a Red Hat major version, and, in particular, making it difficult to install many popular web packages (somewhat ironic for a distro marketed as a more secure distro for servers). It is often necessary to scour the internet looking for third-party repositories to install newer versions of key packages, when instead, it should really be for Red Hat to make newer versions available as optional installations for those who need newer (not necessarily the newest) versions.
My personal choice would be for Debian or Ubuntu LTS instead, which combine both reasonable long-term support with the easy availability of newer software.
solid distro for production environments. Stable, stable and stable again as well as secure. Support is very good. Knowledge base is actively maintained. My OS of choice where clients demand high uptime and with demanding SLAs!!