Not that you
should, since I'm not mentoring you (unless you live in Houston
); but I use SimplyMEPIS. (Couldn't resist the bait.
I think you should 1st choose a Desktop Environment ("DE") & that the choice of distro should flow from that decision. So, KDE, Gnome, XFce, or what? Then pick a distro that supports your choice. Defaults to it is nice.
Other considerations are packages & package management.
4 out of 7 in your list use .deb
's, the other 3 use .rpm
's. Although .rpm
tools have "caught up" recently, Debian's APT (Advanced Package Tool -- for .deb's) is superb at dependency management.
What additional software is available through your chosen distro & at what cost?
I would add that you might want to consider do your 'Net access control on a separate perimeter firewall box that only you control. There are several single purpose distros for doing this.