On the same screen, PAD is more affordable: the common screen of electronic paper books is 6 inches, which is only suitable for reading liberal arts books in horizontal screen; If you read literature from a large-screen electronic paper book, it is at least 1300+ RMB at present. If you pursue quality a little, 2000+ RMB will be gone, and you can buy a PAD at this price.
PAD is in color: if the literature is mostly pure text, you can skip this article, but if the target literature contains a lot of drawings, pictures and other information, color screen is the best choice. The technology of color screen electronic paper book is very immature and expensive, and it can't occupy the mainstream in the market now, so PAD is a better choice.
PAD touch is more sensitive: although the electronic paper book has touch function, it is still inconvenient to zoom when reading. Considering that some liberal arts literature (such as the scanned version of traditional ancient books) and a large number of science and engineering literature need to be enlarged, PAD is a better choice.
PAD system is more practical: literature reading includes not only PDF materials, but also downloading related documents of HowNet and other websites, or reading documents in DOCX format and reading picture documents. Electronic paper books on the market need to be brushed by themselves to meet various document formats as far as possible; Either you need to pursue a good Android system and rely on Android APP to read. However, both technologies are immature, especially the brush machine is very risky. In order to read better, it is recommended to choose PAD.
I am a loyal user of electronic paper books. But considering the above points, I think as long as your eyes are in good condition and you can use them normally in the future, PAD is a better choice for literature reading. If the budget is ok, the IPAD is certainly the best, even the MINI.