If you're looking for a cheap alternative to the Kindle and don't want a lot of your machine besides readability and portability, this is a fairly good way to go.
The digital ink makes reading the screen almost like reading a printed book and it's small and slim, so you can stick it anywhere. The menus are very simple and intuitive.
However, the buttons on the side an ANNOYINGLY place and the center button tends to be stiff. The most recent firmware update made it less finicky, though, so that's an improvement.
You can load your books and such with the cord they send you, but it's very, very slow and getting or using an SD slot is much simpler and faster. The USB cord can charge your unit from the computer, or, alternately, with this neat little wall jack it comes with.
It also plays mp3s if you want to upload them. I've never bothered, so I don't know how it sounds.
Customer service, however, is rather mediocre. The response time is fairly fast, but the service is rather curt--as if they don't want to be bothered. The forum isn't that great of a help, either. I had a lot of problems with mine when I first bought it, and the whole lot of them were kind of unhelpful.
However, when the thing is behaving, it's a great reader.