PaidContent.org has put together a thorough, helpful chart that compares the six most popular e-readers: Amazon.com’s Kindle 2 and Kindle DX, Sony’s Daily Edition, Barnes & Noble’s Nook, Plastic Logic’s Que proReader, and of course Apple’s iPad.

The chart compares 19 features ranging from hardware to software to content.

Click here for the full-size version of the chart.