There was a time when I favored Ubuntu LTS releases over Debian, because of the extended support period and the ability to migrate from one LTS to the next. Time spent migrating from OS release to OS release is time servers aren't serving.
Since then, Debian has added its own LTS-like phase of support (though it's still not supported to skip versions when upgrading), and for me Ubuntu has made a lot of decisions that show they aren't really in alignment with my personal Free software preferences, so I favor Debian these days.
.. my last experience with Linux distros outside of this pair is limited, so I can't speak to e.g., Fedora or CentOS these days.