I mostly use the iPad for reading, ebooks, pdfs, saved web articles, HN, etc.
I initially got the biggest iPad but it was certainly too heavy to hold like a book and read comfortably. I switched to an iPad mini which was perfect for reading everything but PDFs, the problem is I read a lot of PDFs. I currently use an 11” and take the cover off to read with it, I find it to be the right trade off between size and weight for me.
I just traded in my 12in pro for this reason. However, I think a MacBook Air may be a better reading device because it will prop up the display at whatever angle you need it to be for comfortable reading, while remaining ultra portable or easily resting it on your lap or chest (if you like reading lying down).
I initially got the biggest iPad but it was certainly too heavy to hold like a book and read comfortably. I switched to an iPad mini which was perfect for reading everything but PDFs, the problem is I read a lot of PDFs. I currently use an 11” and take the cover off to read with it, I find it to be the right trade off between size and weight for me.