I went with the Paperwhite because of the back lighting and the ability to read in the dark and not disturb anyone. I'm fairly certain the e-ink is pretty much the same as the old one (maybe better quality, but no reading in the dark).
They do have lighted covers, but by the time you buy one of those, you're basically paying the same price as the Paperwhite.
The paperwhite has no buttons like a pp mentioned, but you don't have to swipe to turn pages, just touch the screen. (Occasionally, like to unlock, you have to swipe, but not in any particular place).