This $50 case turns your phone into an e-reader minus the benefits of an e-reader

There's not much incentive to upgrade if you already own an older Paperwhite, but if you're an avid reader, you'll likely appreciate the newly minted seven-inch display, which is the biggest of any Paperwhite to date. It's also 25 percent brighter than the previous model and features a higher contrast ratio, allowing for improved readability. The jump from 10 weeks of battery life to three months is a more substantial upgrade -- as is a new processor, which supposedly makes a big difference when it comes to page-turning speeds -- but we'll need to finish putting Amazon's latest e-reader through its paces before rendering our final verdict.