OpenSUSE is my prefer Distro as it seems to get new but stable just right.
Also the MOST under used Linux tool out there is https://build.opensuse.org/ The openSUSE Build Service is the public instance of the Open Build Service (OBS) used for development of the openSUSE distribution and to offer packages from same source for Fedora, Debian, Ubuntu, SUSE Linux Enterprise and other distributions.
