[kot-behemoth]

I actually am in the same position as you - my main text editor is Emacs (well, doom-emacs). After trying out Bear, Standard Notes etc, I couldn't give up editing plain md files that easily. Org-mode is amazing, but the attachments story is just not solved, especially once you throw mobile into the mix.

I've settled on Joplin, as it's the only serious note-taking app that allows for Emacs-friendly workflow by simply using external editor. I just set the external editor command to be 'emacsclient -c'. Now, when I'm editing a note, I just press Cmd-e, and get Emacs for editing - just for that note. Once I finished editing, it's "C-c k", and Emacs closes and I'm back in Joplin.

I actually set Joplin's layout to always show the rendered md, so that it's basically a pretty front-end for my Emacs-powered editing workflow. Beyond that, syncing and attachments are what makes it more or less perfect second brain system for me.