Ask HN: Which Emacs to use on OS X Lion? 14 years ago
i've been very happy with the emacs available in brew.
/usr/local/Cellar/emacs/HEAD (3792 files, 113M) Installed with: --cocoa, --use-git-head
resulted in a very happy GNU Emacs 24.0.92.1
this also includes the nice full-screen patch. (note, it's not the standard lion full screen app).