The iLiad makes use of the amazing e-Ink screen technology but is more than just a reader. Unlike the Sony Reader the iLiad also allows you to write to the device using a stylus. It is more akin to a PDA than a pure reading device. This feature comes at price; reduced battery life (though still much better than a regular PDA) and higher cost.
Here is what the iRex website says about the iLiad;
What is the iRex iLiad?
The iLiad is a portable device that allows you to read digital content any where at any time.
Comfortable Reading (From Digital Print)
- The Electronic Paper Display technology reads just like normal paper and is perceived as such by the human eye.
- Easy navigation based upon reading behaviour.
- Scalable text. You can change the font size of your text to suit your own reading comfort. (Format and DRM dependant.)
Read…and Write
- Touch screen with stylus.
- Use the iLiad as your notepad.
- Write and comment in articles (format and DRM dependant.)
Mobility and Convenience
- The iLiad is a lightweight device for both indoor and outdoor use.
- Indoor reading: The device is designed for relaxed reading at home and productive reading in the office or workplace.
- Reading outdoors: You are now able to read digital text in full sunlight, just like paper.
- A mobile device: The lightweight iLiad is the size of an A5 document (folded letter sized document) (approximately), with a screen large enough to accommodate nearly all content, but small enough to take with you wherever you go.
- Very low power: You can read three hours a day for more than one week, from the iLiad without recharging the battery.
— irextechnologies.com
Let’s be fair. The iLiad is the first and (still) only reader with an (almost) page size screen. That is what you want when you switch to ebook reading.
Disadvantages of the iLiad: limited battery life, no text search or jumping by chapter, limited number of supported formats.
Advantage: it’s better than reading a paper book. And you carry your library with you, of course. Back your library up after adding new books.