I too have tried a great variety of tools/apps for notetaking and for now have settled on using markdown notes semi-organized in Joplin and an old-fashioned dead-tree notebook for a weekly planner...
The semi-organization I mentioned is vaguely /a la GTD/ but I don't follow it strictly.
I have an interest in org-mode but it seems like a huge commitment to learn it (really a huge commitment to learn emacs is what it really boils down to).