I use a distro that I would be happy to recommend to other people.
My main checklist points for this are usability, .deb packaging and
stability.
Trisquel can be viewed as just Ubuntu with non-free removed, but it is so
much more than that.
Default Interface http://i.imgur.com/1uddJH9.png
The default Trisquel interface is the cleanest and most concise PC UI that I
have used so far(several decades of GNU+Linux/mac/wind). The main points on
my UI checklist are a taskbar at the bottom of the screen, a main-button in
the bottom left, a clock in the bottom right and a main menu that includes
programs, add/remove programs, settings and shutdown/logoff. These are the
immediate places I look for these tools/options and where the majority of
novices would too.
Trisquel tracks stable releases, so a new user will not have bleeding-edge
crash issues.
Trisquel has a great desktop layout and stability that I would be confident
recommending to a novice PC user.
Other considerations are the community and a commitment to a fully free
distro.
Thanks to everyone who contributes to Trisquel.