I gave Linux Mint 17 Mate desktop a try and was pleasantly surprised. It is a very smooth and fast performing distro based on Ubuntu 14.04. The only annoyance is the Firefox search engine default which uses Yahoo and the Mint logo. I found a fix for this under a previous post. Otherwise a great distro for those who like the old GTK2 interface, yet is based on Gnome 3.13 kernel. They use the fine Caja file manager instead of Nautilus. It found my wireless card right from the live distro through to install.