Kindle 3G Wireless Reading Device, Free 3G + Wi-Fi, 3G Works Globally, G...
I am really happy with my Kindle. I've never thought I would enjoy using a device that has no touch screen, since I have my iPhone (and hopefully soon an iPad ^^). But what makes the Kindle so special, is that it really is a dedicated device. You use it to read and that is basically it. You don't get distracted by other fancy applications.
One thing I am disappointed about is the connection to social media. It cannot connect with my Twitter account and the browser really is an "experiment". But at least this keeps me focused on reading.. ;-)
Another thing I don't really enjoy is the whole navigation (especially compared to the simplicity of iOS), but you get used to it.
I travel a lot and finally don't have to worry anymore about buying books, they are just too heavy. But the Kindle I always take with me wherever I go.