Unfortunately, the world of e-books is Balkanized, with multiple incompatible file formats and digital rights management (DRM) technologies, and devices with varying support for both. Books in the public domain are widely available in PDF and other standard formats. But copyrighted material is another story. Amazon’s current Kindles can obtain commercial e-books in Amazon’s AZW file format via wireless download only in the United States (in early October, however, the company announced a Kindle capable of downloading content in most countries).
A chart of the Top 5 eBook Readers is Available Here (The nook is Not Included).
1) Sony Reader Touch Edition
2) Amazon Kindle DX
3) Amazon Kindle 2
4) Sony Reader Pocket Edition
5) Interead Cool-ER
You can find reviews for all of eReaders reviewed, on this page
Source: Computerworld, PC World
