I have the PP but also bought a cheap cruz reader (for about $85 shipped at woot, uses android). I mainly want that one to read at night and the PP to read during the day, though I've recently bouch some books using the kindle and nook apps from android, so I actually haven't used it much since I finished the book that I was reading with it.
I really don't like much using the PP with a reading light, so I'm using the LCD screen reader with black background and white letter, with the dimmest brightness I was able to configure