There are multiple x vs y threats about which would be better and most of them focus on screen real estate in landscape mode for multitasking. What about If you plan to use your IPad Pro mainly on portrait mode for studying the old way (reading thousands of A4 Pages in pdf, so many that you don’t have neither the luxury or the time to take notes)? An Ipad that primarily would neither be used for multitasking, neither for doing assaigments with a word processor or even for taking notes. In this use case the Apple Pencil would be mainly used for underlining the documents and maybe a short 5 word note here and there. The Ipad would mainly be used in portrait mode because If you are reading you obviously want to see the whole page, not half the page or a microscopic page. Also pitching and zooming although an option is not ideal and I would prefer not having to use that option very often. So this being said, obviously the 12.9 being almost the same size of an A4 page wins in this situation and the others. The problem starts when you factor portability into the equation...is the IPad Pro 10.5 real estate good enough? I’m not asking If It is better or worse, obviously It is smaller so not so good in this situation...but is It a sufficiently good size to read comfortably in a portrait orientation, without having to zoom all day? Thanks Edit: Just went to the Apple store to try the IPad Pro with the documents I will be studying in portrait mode. The 10.5 seamed absolutely perfect for my needs. Obviously with the 12.9 the pages were bigger but the readability on 10.5 was very good, no need for pitching and zooming so in my opinion anybody who has the same needs as me will be totally satisfied with the iPad Pro 10.5.