That's what I use. I tried the basic cheap touch, but no back light. No need to get a more expensive one if you don't need it, use the money for books.
Put Samsung Kindle on your phone (if you feel on using it), you get one free book, out of four choices, each month. These can be read on any device.
If you want the fire tablet, they have a blue light for reading. Not sure how well it works.
I have a Kindle touch. I don't read books or any long articles on any backlit device anymore. It's not good for the eyes.
If my kindle is not with me I get through books and articles by having them read to me with a good text-to-speach app. I recommend @Voice Aloud Reader for Android or Voice Dream Reader for iOS