I have 4 Kindles and 1 Nook Simple Touch. For many reasons, I would advise you to buy a Kindle, but stay away from the lit screen models, no matter the Kindle Paper white or the Nook Glow light. I like my Nook simple Touch, but the Kindle
http://www.amazon.com/dp/B007HCCNJU/ref=sa_menu_kdptq3 would be my #1 choice today. Very simple, resourceful, light weighted, good hardware, and a real bargain $ 69.00. Amazon has a huge variety of books at a very low prices; their support team is absolutely efficient and kind. You'll get happy with the device and Amazon's eco system, spending just a modest amount. Buy a good clip-on light if you really need it. I hope I have helped you to make a decision. Good luck!