Nook hands down. It's color, has the Internet, you don't need your computer to download and then upload to your device, and it comes with so many features like word, pandora, games and much more. I love my nook!
Yeah, both have different features. I prefer the nook because I have one. I don't know about kindles, but If you go into a Barnes & Noble bookstore, they will let you test out the nook for free and see how you like it. They do not require you to buy it after you test it.