I find the most valuable aspect of Red Hat Enterprise Linux (RHEL) is its stability in working with other enterprise devices, such as firewalls and centralized storage. Enterprise applications and devices communicate well with RHEL, and it provides appropriate drivers for those enterprise devices. However, apart from that, I see almost the same performance with other open-source distributions like Ubuntu or Debian.
 When assessing the knowledge base offered by Red Hat Enterprise Linux (RHEL), I find their documentation online to be excellent. I would rate the experience I have had with the documentation or knowledge base of Red Hat Enterprise Linux (RHEL) as excellent, giving it a ten out of ten. It is very good and useful for other Linux distributions as well. 
 The most important security feature in Red Hat Enterprise Linux (RHEL) is similar to that of other distributions, such as user creation and minimum privileges during the operating system's operation. In enterprise environments, I don't notice anything special in terms of security compared to others; it interacts very well with enterprise devices like firewalls and storage solutions.
 RHEL has its own firewall, which is SE Linux, and I consider that to be a remarkable security feature. I have not tried Red Hat Insights; I don't know how to use that feature of Red Hat. Regarding the Image Builder or System Roles in Red Hat Enterprise Linux (RHEL), I haven't used them; I only use the ISO image directly for installation.