Hello Ubuntu community, it's been awhile hasn't it? Not that any of you would remember me since I've only really posted in the support section a few times before giving up on Linux for awhile... yeah...

But with the Windows 10 Insider preview coming to a close, I want to put a Linux Distro on my second HDD again. Problem is, I can't find one that fits my needs AND WORKS that I haven't already tried. Can anyone lend a hand in helping me find one?

What I need:
-Up-to-date graphics drivers(Proprietary only, NVIDIA 750 TI)
-Gnome 3.14 or newer(preferably, really want 3.16)
-Steam support
-Decent default apps(for example, LibreOffice)
-Firefox or Chromium web browser
-WORKS

Distros I've tried:
Ubuntu 14.04
Ubuntu Gnome 14.04
Ubuntu Gnome 15.04
Debian 7.8(I think?)
Fedora 21
SteamOS "Alchemist"