"A versatile open architecture eReader, but with a cost:"3.5 starson by bicarus
Pros: Does much more that the other EReaders. Downloadseverything you can ask of it. Word, PDF, Mobi, EPub. You can mark up the text. Adding content is easy through Calibre or the Sony software. The most versatile and flexible of all the readers.
Cons: Screen is definitely harder to read than the others. Easy to navigate. There is no WiFi/3G for the Touch.
Battery life is not as robust as a Kindle(wireless off) but is fine for for 5-6 days.
Summary: If you want the most versatile eReader which can adroitly handle most of the e formats then the SONY is the one for you. The screen will be a disappointment (touch screen resolution and glare). The other eReaders have better screens and are easier to read but you are not tethered to any particular bookstore and have the choice of what and where you get your content with the SONY.. Furthermore, if you can live without having a wireless connection this is a good choice. The touch screen allows easy navigation through Word documents, EPub, and PDFs. The mark up function works well enough to grade papers when you are on the road. When SONY figures out how to improve the screen quality with the touch function they will have a formidable product.