For any students taking courses like organic chemistry or biology, do you recommend using a sort of pen to write on the screen for structures and note-taking? The yogi can be used as a tablet, so I thought it might be more convenient to just draw straight on my laptop rather than on paper. The yogi 7i is pretty large so I don't know if it'd be too much. If you use a pen, which do you recommend? would much appreciate any guidance from fellow students on this!