Really love this product! I use this for textbooks for my classes, Manga, and a few E-books here and there so my review will be centered on these points of interest aswell as the overall usage and feel of the device.Hardware: The device feels fantastic to hold, it's light weight and doesn't cramp my hands after hours of reading. The battery is also phenomenal, on an average month I charge it once if I happen to notice it's getting a little low, but I've also ridden out an entire day at school with 15% battery life left. The screen is exactly how you would expect an E-ink display to be, with a few caveats I'll touch on further on in the review.Textbooks: My school provides online textbooks by default now when you sign up for a class (you pay for it by default aswell ?). The only issues, is that the only way to access the books is by web browser, or via a specific APP. If this were a Kindle, or any other closed ecosystem product I wouldn't be able to utilize my books at all, but having access to the Google play store made it a non-issue. My only compliant for this category is that navigating between chapters and pages can be a little slow, and when a professor randomly jumps around it's hard to keep up.Manga: this works well, but not exactly what I hoped for. The screen does make it look just like paper, but slmething about the aspect ratio makes Manga panels not quite fit width wise, which is a bit infuriating considering the screen isn't very big in the first place.The high speed refresh rate mode is amazing for Manga. The big con in this category is comic books, some work decently, others have to much shading/detail and it kind of overloads the screen. I'd imagine it would be better with a color display.E-books: I actually have an app that allows me to "rent" books from my local library, again this is something that might not work on closed ecosystem devices. As an ebook, it works fantastic. I prefer the standard refresh rate and to swipe to a new page opposed to scrolling, while the scrolling works, I find the choppiness of the display (when not in high speed mode) to actually make me nauseated. Besides that, it works great for E-books, and even PDF's if you aren't lucky enough go have access to your public library's system.Overall, for the price I cannot recommend this E-readee more. Plenty of hours on it, multiple charge cycles and no issues at all, hasn't even slowed down.