The best note system is the one matched to what you will do with the notes: pass an exam, write something original, or simply follow a lecture.
Cornell for exams
Cue column, notes, summary. It builds retrieval practice into the page itself, which is why it still wins for revision.
Zettelkasten for writing
Atomic notes with explicit links surface connections you never planned. It is slow, and it pays off only over months.
