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Linux Mint 17.1 XFCE 64bit. Install and review.
http://blog.linuxmint.com/?p=2742
Linux Mint 17.1 is a long term support release which will be supported until 2019. It comes with updated software and brings refinements and many new features to make your desktop experience more comfortable to use.
LTS strategy
Linux Mint 17.1 will receive security updates until 2019.
Until 2016, future versions of Linux Mint will use the same package base as Linux Mint 17.1, making it trivial for people to upgrade.
Until 2016, the development team won't start working on a new base and will be fully focused on this one.