Debian is GNOME-pure, better and light. If you want 100% GNOME go with Debian or Fedora. (see the difference between any GNOME distro in System Preferences and Ubuntu or Ubuntu based for example). GNOME is amazing but worst in Ubuntu based.
Trisquel is good with KDE, XFCE, LXDE, Enlightenment and others because Canonical doesn't patch them.
