I have Kindle Paperwhite, 2nd gen. Amazon also has a cheap entry model without light, but I think paperwhite is worth the money difference. The entry model is fine, too, you just need external light.
Plus entry level isn't touchscreen. The page change buttons on the entry level are maybe better for some than a touchscreen but when you need to enter text or want to highlight a word to look it up in the dictionary or want to mark a passage the touch screen is much easier.
The front light is also better than using an external light as its more even and the light also improves reading in the daytime too, especially in direct sunlight