For example Red Hat Enterprise Linux or SUSE Enterprise Linux.
I’m considering switching to RHEL, to get a “professional” Linux, since it’s free if you register an account, but is it worth it?
Is the experience very different from Fedora?
Not anymore because all the reason I mentioned. Has the experience change in recent years? Not likely. It is the same software as in other distros - just years out of date. That has not changed as the goals of these projects have not changed. They might be on newer versions then 10 years ago but they are still way behind more frequently updated distros - or at least will be very shortly. That is fundamentally how these enterprise distros work. Their target audience is businesses needing support, not lots of end users.
The big attraction towards these distros are the support that enterprise people will pay for - which you do not get with the free version. If you don’t mind older versions of things then it might be nice for you. If not then I would stay clear of them.
