I'm debating whether i should keep my surface pro 3 or sell it to buy the new ipad. I do most of my stuff on my Macbook Pro, and if I get the new ipad, I'll only be using it for school (reading pdf books, drawing diagrams, etc.) Obviously, ipad is nowhere close to being as good as the surface pro 3 for drawing diagrams, but low battery life on SP3 is a huge con for me. Do you think ipads are productive for school usage? Also, is it still possible to draw decent diagrams on ipads using stylus (i.e. does it support palm rejection, etc.)?