Amazon Kindle DX is the the third model in the Kindle. Kindle DX boasts 9.7″ diagonal e-ink screen reads like real paper with 3G wireless access and 3.3GB of storage, which is designed to display periodicals and textbooks. Kindle DX can store upto 3,500 books which is around 2.5 times more than the previous models. Kindle DX has native PDF reader for documents. Size is 10.4″ x 7.2″ x 0.38″ with 18.9 ounces weight. Fujitsu’s FLEPia is a Color E-Paper Reader which is considered as Amazon’s Kindle 2 killer.