I'm thinking of transitioning from a notebook and clipboard for sketching and note-taking to an iPad Pro (which I already have) and Apple Pencil (which I just ordered). Simplicity is by far the most important feature for me, followed by the ability to export in a common format (ideally pdf or jpeg). Something like Notes would be perfect, except, as far as I can tell from reviews, it doesn't export (at least not easily). Can anyone suggest something? Thanks.