The benefit is support and access to their support pages, you can also make general administration easier through some of their tools. But it's pretty expensive
The main thing I liked about RHEL was its stability. Not a lot of churn, and for running any other vended software, support for RHEL was never a question.
Converted everything to CentOS. When Red Hat killed that distro, that was a bridge-burning event. We use Ubuntu now.