I've had a trusty Cybook Gen3 since they first came out...I think late 2007. Great e-ink display and has done well through hundreds of ebooks. I've also used a Kindle, a Sony and a Cybook Orizon.
Just received my Nook Simple Touch with Glow Light and it is a Wow!!! Everything first rate including the Wi-Fi, screen, controls, user friendly interface and outstanding battery life even using the light, which is excellent.
Can't hardly put the thing down!!