Sony Sony Z Ultra Google Play Edition

Compact and lightweight e-book reader; responsive touch-screen interface with no glare or contrast issues; high-contrast E Ink Pearl display; zippier performance than its predecessor; integration with Sony e-book store; good battery life (up to two...

No Wi-Fi or 3G wireless means that books must be loaded via USB connection; more expensive than E Ink Kindle or Nook models; no protective cover included.

The Sony Reader Touch Edition PRS-650 is a slick e-book reader that's anchored by an impressive and easy-to-use touch interface, but the glaring omission of wireless connectivity will be a deal-killer for many--especially at this price.

Very compact and lightweight; responsive touch-screen interface with no glare or contrast issues; high-contrast E Ink Pearl display; zippier performance than that of its predecessor; integration with Sony e-book store; good battery life (up to two...

No Wi-Fi or 3G wireless means you'll need to drag and drop purchased books from a PC or Mac; more expensive than Wi-Fi versions of Kindle and Nook; no protective cover included; Sony Reader Store isn't quite as extensive as Amazon's or Barnes & Noble's.

If you can overlook the fact that it's missing wireless connectivity, the Sony PRS-350 is a very nice little e-reader that's anchored by an impressive and easy-to-use touch interface.

The PRS-600 is sleeker than the Kindle; touch screen is more responsive than last year's Sony Reader; interface offers better ergonomics and is mostly easy to use; with the addition of an optional memory card (SD or Memory Stick Pro), it's capable of...

Screen is still glare-prone; screen contrast (how dark the letters are) isn't as good as what you'll find on competing models; lack of wireless access means all files must be dragged and dropped from a PC; battery is sealed into unit; notation and...

While it's an improvement to the company's previous touch-screen model, Sony's Reader Touch Edition PRS-600 is saddled with a screen that's short on contrast and prone to glare--and it lacks the wireless convenience of Amazon's identically priced Kindle.

With its sharp 5-inch screen, the Sony Reader Pocket Edition is much more compact than the Kindle 2 and fits comfortably in one hand when reading; font size is adjustable; decent battery life; Sony's eBook Library software is now both Windows- and...

No expandable memory; battery is sealed into unit; screen may be too small for some people; limited zoom function with PDF files; cannot display JPEGs or play back MP3 files; not as zippy as the step-up PRS-600; USB charging only works from PCs.

While Sony Reader Pocket Edition PRS-300 has a basic feature set, its $200 price tag, compact size, and Epub file compatibility make it an appealing e-book reader.