I have the Sony book cover with the built-in light. I like it pretty well. I have never changed the battery and use it quite a bit. The natural place to suspend the light seems to be at the top of the reader, but for me, it causes a lot of glare. I twist it and shine it at an angle from the left side and it works great illuminating the entire screen. Admittedly, this cover/light makes the Pocket Reader unpocketable, but if I really want to carry it in my pocket, I just remove the cover. I prefer it with a cover, esp at work, because it looks professional. It is especially helpful in meetings when I want to read instead of pay attention
