My mother will be going out on a tour this summer and it is her birthday in a few days. So I was thinking of gifting her something that would be useful in her tour. She’s an old energetic lady and loves reading. I thought an ebook reader would be great. I looked over the internet and out of all I really liked Barnes and Noble Nook reader. There were others too but I have heard good things about it. Can anyone give a detailed review on the same. Also explain what is the difference between various models.