[Nokose]

Another problem that your looking at is the program that your e-reader displays as they read books only from the company supplying the ebook. I have the Kindle Fire which I enjoy but maps are not the greatest on it. Pictures are fair to okay, depending on what was published a lot of times. I mostly get books that have text. You can highlight parts and with Amazon it's possible to share your ebooks. I wouldn't waste money on looking at profiles and charts on it (just to small).