[kruk]

I use Kindle Voyage and the reading experience in the dark is superior to that of iPhone 6. The screen is lit but it doesn't shine in your face, so you can read comfortably for a prolonged period of time.

I still read a lot on the phone because it's always available but with 3G enabled Kindle you can freely switch between the two devices and always pick up where you left off no matter what device you're using.

I somewhat still prefer reading paper books but I do majority of my reading on Kindle. It's always available, it can hold thousands of books and if there is a book you want to read chances are you can get it on your device within minutes.