Are you still trying to discover the perfect GNOME distro? You are just loosing your time! There is no such thing.. However what seems to make a difference is Arch Linux. Huge super active community, pure rolling release, native GNOME experience, unlimited packages, the very best documentation.
Arch is excellent choice for enthusiasts, excellent choice for veterans but not really good for people that they just want a free box to serf on Internet. Believe it or not, Fedora 19 comes to close that gap, despite some issues with installing proprietary software, which is *necessary* evil.