rookie question about PACKAGESITE

[Coert]

Hello all,

I started using FreeBSD about a week ago, and I really like the system. 
Have been using Linux for the last few years.

One noob question though, according to the Handbook on Packages and 
Ports, I can use packages for either RELEASE, STABLE, or CURRENT.

How exactly would this compare to Linux?
Is it that CURRENT is like Fedora(bleeding-edge and somewhat unstable), 
and STABLE is like RedHat Enterprise Linux (older versions of software, 
but very stable)?

Which one should I use? I am currently using RELEASE.
I am not looking for bleeding edge. I'm after stability.

Kind regards,
Coert