eInk is great, doesn’t cause eye strain and reads like a regular book. The kindle paperwhite with back light is a great compromise because when it’s normal light conditions you can set it to minimum backlight and reads like a book and in the dark you can increase the light a bit as you need it… in complete darkness, once your eyes have adjusted to the dark, setting it on just above minimum is good enough to read, much better than using a book with light shining on it, I love my kindle paperwhite although the battery doesn’t as big as the original kindle keyboard, the back light feature makes it much better overall