Digital lets me find things much more easily, but for maths-heavy notes, I prefer hardcopy. I'm not as quick with LaTeX as I am writing, and I couldn't get the hang of using a stylus for maths. Wish I could more easily get the best of both worlds.
Have you tried TeXmacs for math-heavy notes? Thanks to copy/paste, I find I'm quicker in it than on paper, as long as the work isn't too diagram heavy. For simple diagrams, there's a vector image editor built in.
