> Only downside is I'm dependent on Evernote, but hopefully it manages to stick around in some form for a good while, and if it ever doesn't, I expect I'll be able to migrate to something similar.
I have used Evernote and OneNote, but have finally, after a long interim period, resorted to using only markdown.
I have a "Notes" root folder and organize section groups and sections in subfolders. VSCode (or Emacs), with some tweaks, shortcuts, and extensions, provides a good-enough markdown editing experience. Like an extension that allows you to paste in images, storing it in a resources folder in the note's current location (yes, I see small problems with this down the road when re-organizing, but nothing that can't be handled).
For Firefox, I use the markdown-clipper extension the few times I would like to copy a whole article, it works well enough. Or I copy/paste what I need; mostly, I take my own summarized notes.
For syncing, I use Nextcloud, which also makes the notes available both for reading and editing on Android and iOS (I use both).
Up until very recently, I used Joplin, which also uses markdown, but there were two things I could not live with: it does not store the markdown files with a readable filename, e.g., its title, and being tied to a specific editor.
If you are mostly clipping and not writing your own notes, I can imagine my setup won't work well, or be very efficient.
I want to use a format that has longevity, and storing in a format that I cannot grep is out of the question.