E-readers are really designed for reading a book that is all free-flowing text, from page one to the end. The farther you get away from that model, the less suitable 7" e-readers are. You mention a couple of flies in this ointment: (1) a library of PDF's (page images rather than free-flowing text); and (2) college textbooks (charts, illustrations, multiple columns, flipping back and forth while studying). For college, you'll also probably be reading multiple books simultaneously; while e-readers are good at keeping your place in each book, it can seem so tiresome going back through the menu each time you want to swap to a new book several times a day.
|