Of all the devices available "today" subject to change tomorrow this is the best device for what you want to do. While it adds bulk having two screens you can blaze through documents like no other devices. What I mean is having a TOC on the LCD and content on e-ink is great. So efficient. I love my Nook for being a reader only. It is good be epub files and that is about it. If you want to move around, take notes, read PDF's forget. While the Kindle DX is promising most of the "experts" have said forget it when it comes to annotations and the like.