Amazon has put on its war paint, pulled out its tomahawks, and declared all out war on the iPad. Since the iPad’s earlier release, Amazon has been acting irrationally, trying to keep the stranglehold it has on the market. First, it introduced the Kindle Apps, an obvious stake at one of the iPhone’s (and now, iPad’s)...

E-paper devices have been plagued with bad usability since the start. The Kindle, while serviceable, feels very retro in its use of clunky buttons. Other manufacturers have tried to modernize usability to mixed results, each one implementing touch-screen interfaces in their own ways, and each one fundamentally flawed. The Sont PRS-707...