I strongly recommend GoodNotes for this use case. They do a better job than paper at all the "think" tasks like lassoing objects, handwriting in a zoom window,

I strongly recommend GoodNotes for this use case. They do a better job than paper at all the "think" tasks like lassoing objects, handwriting in a zoom window, highlighting, etc. http://www.goodnotesapp.com http://www.goodnotesapp.com (I'm not the maker, just a really big fan)