I have a Nook Color. Did lots of research before choosing this and am really happy with it. Being able to borrow from the library was a big factor in my choice. It even has a reverse screen (black background with white print for night reading so I don't have to have a light on and disturb hubby. Yesterday I got an email from B&N saying the new software is free to download to access web version email, facebook, videos and lots more. Since Christmas I have only bought two 'in-hand' books because they were both the last of a series by my favorite authors.
The Nook Color also lets you use a SD card to store files.