If anyone have used previous version of nook you will immediately see the improvements on new version of nook. One of the most important feature I found on the new nook was better page turn response. The screen refresh when moving from page to page is much quicker, nearly matching the refresh rates of the latest Kindle. The Nook also added a laundry list of interface and usability improvements, such as the ability to organize your book collection by category which is called "shelves".I liked 600 X 800 display screen. It comes with 16 shades of gray and is easy to your eyes. I can read all day without hurting my eyes. My personal opinion, i would love this device more if I could read it at night without lights.