This results in high contrast display that looks exactly like a real paper. (goodereader.com)
«The new Paperwhite is our best ever, with a new higher contrast display, the next generation of our built - in light, a powerful new processor, and the latest touchscreen technology.» (goodereader.com)
As far as contrast, though Amazon doesn't break out the contrast ratios for either Kindle, it does say the Voyage has the «highest contrast display of any Kindle.» (knowyourmobile.com)