Vector Linux released the second alpha of its forthcoming release 6.0. In the first alpha, GNOME was the default desktop environment. It was, however, too bloated in the opinion of most of the alpha testers. Now lighter XFCE is installed as the default desktop environment. For people using old computers, LXDE is offered as a secondary alternative.
If you are willing to invest your time in trying new distributions, you could do worse than to try and install this alpha release. Linux distributions rely on the users for testing alpha releases, and the more people install and use these prereleases and file bug reports, the better the final version will be.