I don't usually review products, but after about a month of owning one of these that I bought from play.com for £150, it's been worth every penny! I read a lot of academic articles and also books, which I would print out and or have in my bag on the train to work, but this device lets me store hundreds on an SD Card (wow, not a memory stick!). The device handles PDF pretty well, why not five star - well the page turning is slow, the shut down is very interesting - I shall leave you to figure that one out and charts/graphs don't always display well, which in my field of educational research is unforunate, but saying this, it feels like paper, it reads like paper and the battery life is amazing, charged it a month ago, still 75% charge left. Plays music well, tested that out, photos are displayable on this too. It's a very decent product if you want to listen to some music and read a novel or article on the train, use it everyday. With the amount of stuff people print off and have in their bags, this would pay for itself in a month in paper alone! It's environmentally friendly technology. The 160 odd books on the CD are a good selection too and you can use Calibrate to manage your collections, which I haven't used yet, the SD Card and PDF approach is very simple and works for me. Good price from play.com too, if you want an e-reader, you read alot, buy this one.