Amazon Kindle (global wireless, 2009 version)

Pros: I use this for personal reading as well as reference for math/computer science. The DX along with the Kindle for PC software really makes my life easier. The DX is a robust, well thought out product.

Cons: The PDF support on the DX is ok, but I would like change fonts. The DX is fine as it is, but the Kindle-For-PC really needs text search, annotation, and color capabilities.

Summary: One of my favorite tools (maybe *the* favorite). Lightweight, holds thousands of books, a week between charging, reads like paper in direct sunlight, and free roving internet make it the perfect companion for a developer. I read the technical references while travelling, and use the free Kindle-For-PC on a separate monitor when programming. The combination is wonderful. Incidentally, if you use Windows 7 with a multi-touch, you can flip pages on Kindle-For-PC with gestures, as well as make the font larger. The free internet browsing and musing playing is a plus, although certainly basic.

I also got the smaller one for my luddite Lady (who was unconvinced of the need) and now she won't part with it. When she travels she might forget for cell phone, but she never forgets the Kindle.