Lubuntu is ook, I just find XFCE to be more powerful than LXDE.
and since x11 development is dead with wayland coming in I go with XFCE (XFCE has wayland support now wheras X11 will always be X11)
Still both are easy on resources.
http://linux.com/news/best-ligh...x-distros-2017
is a nice article on 2017's best lightweights. Just remember, contrary to the article,, stripped down light weights can definitely be a bigger pita than tried and trusted environments. Lots of hardware that takes days to get running right in Gentoo takes 45 seconds to accomplish in Cinnamon.
wide ranging repositories is a good thing.