I got a Kindle Paperwhite last year. First e-reader. I don't know any other, but this thing is AMAZING. It really gave me a new passion for reading long novels and classics!
I really do think this is the way to go in books, for us who care more about the content, and not that much for the book as an object.
I use for a couple of years a nook paperwhite e-reader. Soo good! But still I love real books in my hands, the smell of new books, texture and design...