Amazon has launched an updated version of its cheapest Kindle. For the first time, the base model Kindle now comes with an illuminated display. The new Kindle features a 4 LED front lighting system (an e-ink display is front lit, as opposed to being backlight like an LCD). In comparison, the more expensive Kindle Paperwhite has a 5 LED lighting while the top of the line Kindle Oasis has 12 LED lighting. Still, 4 LED is better than no LED, and the Kindle features adjustable brightness for comfortable reading in all lighting conditions. The 6-inch display itself has also been...