I'm not sure it's appropriate for the Onyx BOOX Max to be on this list of ereaders. It uses e-ink, yes, and it reads electronic books, but it's so ... out of reach.
With 13.3 inches, which is much larger than a MacBook Air, the Max stands out easily among a large number of electronic ink readers in the market. It is of this size to fulfill a purpose: to read scientific articles and other academic materials in PDF.
If you have ever tried to read a PDF file on a Kindle or any other 6 "screen device, you will agree with me on this: it sucks, you can not really adjust the font size, and even when the page is close, It does not fit on the screen The reading experience is most of the time so poor that it makes more sense to opt for the physical book.
The small ereaders are great and portable, and they're great for reading other formats, but they're just not designed for PDF.
Therefore, if you are a student with many heavy textbooks, or a professional who has to work on tons of large PDF technical books, you will definitely get a kick with this Onyx BOOX Max.It shows PDF files perfectly: crisp, clear, of the right size, almost the same as real A4 paper.No necessary zoom.
The only thing on the screen is that it is backlit. This means that the light comes from the back of the screen to the eyes, unlike the front light readers, where light is reflected in a softer glow. Possibly it causes more tension in the eyes than a Kindle, but, on the other hand, it provides a more uniform light on the screen.