•Battery lasts up to 7 hours
Don't think I'd be interested in an e-reader with a 7 hour battery life. I go over a month before I have to charge my Kobo Wi-Fi.
I'm also fairly sure I don't want to read on a lit display. E-Ink is king in that regard.
I'll stick with the Wi-Fi for reading books, and if I wanted a tablet I'd go for an ipad or the Samsung Galaxy tablet.