
By Richard Gruber

The original Kindle was released by the earth’s largest book seller, Amazon, more than a year ago. Needless to say, it revolutionized the way we approached book reading. Since then, Amazon has released two more versions of the Kindle, which are both targeted at different market segments. In this article, we will quickly compare the differences between these two devices and see which is the best device suited for you.
The Kindle 2 has a much smaller screen than the Kindle DX, which means that it is much more portable. At the same time, a smaller screen implies that you cannot read daily newspapers and magazines so easily on the Kindle 2. The Kindle DX is the ideal device if you are planning to read journals, magazines and textbooks. The Kindle DX also comes with automatic screen orientation, similar to the one you find on the iPhone. The book you are reading automatically switches to landscape or portrait orientation depending upon how you are holding the device. This dramatically improves the readability of the book and comes very handy when you are reading a newspaper.
The Kindle DX also comes with a native PDF reader which is not available in the Kindle 2 device. This makes it very easy to carry your office documents and other e-books without the need for conversion.
One area where there is a stark difference between the two devices is the keyboard layout. Even though it is much larger, the Kindle DX has one less row of keys, which means you need to use a shift key mechanism to enter numerals using the keyboard. This may not be a major deterrent as mostly you will be reading books rather than entering large quantities of text on the device.
In summary, I would say that you should opt for the Kindle 2 if you have portability in mind and do not read many magazines or newspapers on the wireless e-book device. On the other hand, if you are a student who wants to carry all your textbooks in the Kindle, get the Kindle DX version.

Kindle DX : The Definitive Electronic Book… finally!
Although I was an early adopter of the original Kindle, I’ve eagerly anticipated Amazon Kindle DX. The original device was, and is, well-suited for light reading of non-serious material, but its small screen size and lack of PDF support made it mostly a recreational device. I quickly realized that any serious technical book still worked better in physical form. That, combined with the original Kindle’s inability to handle PDFs in a usable form (the conversion left a lot to be desired), made me look at other eReaders, particularly the iLiad iRex. Unfortunately, the iRex, at above $800, was still a work-in-progress, with serious deficiencies in terms of functionality and reliability, and I didn’t want to be an alpha tester of a device that might never BE finished. Amazon’s announcement of the large-format Kindle DX with native PDF support seemed like the answer… so I plunked down the money for a DX and the Amazon case and got on the waiting list.Why would you want native PDF support? The small Kindles support PDFs file via translation; you send a PDF document to Amazon and they convert it to the Kindle’s AZW format and send it back to you, either to your desktop email account (free) or directly to your Kindle ($0.10 per document). However, if your document is anything more than simple text, formatting and imagery are mangled. What you get is readable but not nearly as readable as a Kindle document that was specifically prepared for the device. This is an inherent restriction caused by the difference between a document file structure that is meant to preserve formatting (PDF) and one that is meant to allow for text flow despite screen or font size concerns (AZW). The result was that you couldn’t practically use either the original or 2nd gen Kindles for reading even reasonably complex PDF documents. Having an integral native PDF reader on the new Kindle DX solves this problem and opens up a HUGE world of documents to the Kindle owner.
I’ve had the Kindle DX for about a day now, and it’s everything I was looking for. PDFs render beautifully, and Kindle AZW documents render even better than they did on the original Kindle due to the larger screen size and 16-tone grey scale capability. The large screen really elevates the new DX into something more than a convenient device for light reading. The Kindle DX shows the true utility of an electronic reader for the first time. It’s what the Kindle should have been from the start.
What has improved? Performance is better, particularly the screen refresh rate. The new button design means not turning pages accidentally anymore (although I wish they’d kept buttons on both sides of the device for us left-handers). I don’t like not having an SD card slot on the device, nor do I like not being able to change the battery without sending the device back to Amazon. Being able to turn the Whispernet modem on and off via software (menu item) is scads better than having to move a switch. The web browser’s ‘desktop’ mode makes the browser very usable, especially when combined with the rotation feature. Speaking of rotation, the ability to rotate the device and view documents in either landscape or portrait mode is KILLER. Text-to-speech works well, but I have yet to try it for actually ‘reading’ (listening to) a document while doing something else, e.g., driving, to see if it is really useful or just a checklist feature. The Amazon cover (extra charge) is WAY above the original Kindle’s flimsy cover; it actually holds the device securely, protects the screen, yet is easy to open (beware of the magnetic latch around external hard drives or near the bottom of your laptop).
Okay, so now I have two Kindles. My wife asked me why I need two, a good question. My answer is, the small Kindles are great for light reading… the latest fiction novel, public-domain classics, etc., but they’re useless for PDFs or more serious reading such as technical books because the screen size is too small and images, formulas, etc., don’t display well. The Kindle DX is great for any type of reading and shines with PDFs and more serious books, yet it is considerably heavier than the original Kindle (I’d say twice as heavy, if not more so) and not as convenient to stuff in a carry-on bag. I’ve already moved all of the technical books I own over to the Kindle DX, as well as many PDF documents. I had decided to not buy any serious books for my Kindle, using it only for light reading… but the new Kindle DX has changed my mind. The experience of reading a technical book is as good or better than the physical book, and that is something that could not be said about the smaller Kindles.
If I had to own just one electronic reading device, the choice is obvious: the Kindle DX. Amazon has gotten it right; the Kindle DX finally fulfills the ‘book’ paradigm in an electronic device.
By John Clifford