Overall, it’s a good comparison. There was one point that I questioned:
Electronic ink renders text that is sharp and easy to read, but there's no backlighting, so an e-book reader is just like an actual book—you can't read it in the dark.I thought at least one of the devices had a backlighting feature.
Here’s a comment on Format Issues:
Amazon uses a proprietary format called AZW that only works with its Kindle e-book readers. The B&N Nook and Sony readers support a more-universal standard called ePub, which many libraries across the country are using for lending e-books. Still, Kindle doesn't currently support ePub, and Amazon continues to be the leader in e-book reader sales.At the end of the article, they rate each of six e-readers. So, if you’re still shopping around for an e-reader, check out PC Magazine’s comparison of the top devices.