Sony's flagship e-reader, the Daily Edition PRS-950, is a capable, well-designed e-reader that offers both Wi-Fi and 3G connectivity--but at $300, it's too expensive.
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 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.
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.
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.