I love the Kindle DX. I was so confused about which way to go. Kindle 3 or Kindle DX? 9.7" or 6" ? Does size really matter? My answer is absolutely!
You really need to decide what you will be using the Kindle for. Are you primarily going to read novels in mobi format? If so then the Kindle 3 is the way to go. If however you also plan to read PDF documents, you need the DX.
After I ordered myself a DX, I ordered my mother the K3 (she is 64 God love her and a bit cautious of internet shopping). She has been unable to read for a few years now due to her poor eyesight. While she is not quite 'as blind as a bat', she certainly suffered from eye strain and the discomfort just stole the joy from her reading experience. With the K3 she is able to enlarge the font to a size she is able to see, and with the amazing e-ink technology her eye strain is a distant memory. The size and weight is perfect for her. She is able to comfortably carry the K3 in her handbag and hold it in her arthritic hands without any ready concerns she may have had with a heavier device.
I however, am still slugging my days away in an office as I am a slave to my mortgage. That being said, I often need to read large work documents after 'normal' working hours. Previously to do this I had to take my work laptop home, use my own internet connection to log into my work site, then read the document on the small backlit screen. This process was less than enjoyable, as the reading was almost always done late at night after a long day at work, and inevitably I felt like I was trying to read a large document (up to 300 pages) with a torch shining in my eyes, HELLO HEADACHE. I imagine in fact this would be a similar outcome from reading on an ipad or 'smart' phone. Anyway, I swiftly gave up on that routine and started printing the docs off. Now given the current state of the environment, this was not doing anyone (except my eyes) any favours, however I found this was really the most practical way of getting through the volume of reading I had to do without ending up with a headache on every occasion. Until the DX that is!!!!
Now I leave my Kindles USB cable in my works desk drawer. When I create, or when a large document is emailed to me, I simply plug in the USB cable, save the document as a PDF directly to my Kindles documents folder. Once saved I can either take the opportunity to charge the DX battery via the USB cable, or simply unplug it and head home knowing I can read the document in ease once the family has been fed and the child is asleep.
I've had my Kindle DX for a month, so far I have read two novels, and am half way through my third, however I also have read approximately 20 work PDF's that average 300 pages each... I've charged my DX once so far. While the DX is larger and more cumbersome than the K3, the DX is required for the PDF reader as you can view the entire PDF page on your DX and there is no navigation issues like there can be on the K3. I've even saved powerpoint presentations as PDF's on the DX to review, however would not like to try to read one on the K3 as really think the font would be far too small to be practical.
When you are trying to decide if size should matter, I recommend you ask yourself to consider WHAT you will read on your device. The K3 can be rotated to landscape position and font can be enlarged for e-books... however..... if you believe you will use this device for PDF's, I highly recommend you consider the DX.
My only suggestion to improve the DX would be to have page turning buttons on the bottom of the device while in portrait mode. This would enable (when the DX is rotated to landscape mode), the page turning buttons again be conveniently located to the right of the device inline with where your hand would need to be to turn a 'real' page in a book. Currently if the device is read in the landscape mode, the page turning buttons are then located on the top of the device. (my only gripe so far)
I love the ease of downloading new reading material either from my PC, MAC or directly to the device via the FREE 3G and wifi. No need to wait for the postman, no need to drive to a shopping centre and try and find parking (shudder), I can download a new novel in seconds which is VERY handy when your waiting for that delayed flight, or even when you are early for a meeting and want to kill some time. This device has made my work load so much more bearable, and I have even found I have been using the device for leisure and am really enjoying reading for leisure again.
Even if it means doing the downloading yourself. I recommend either the K3 or the DX device for those whos eye's aren't what they used to be. Seriously, a great gift for the 'more mature' members in your family who may have given up on reading believing it was no longer a recreational option for them. And unless you're a weightlifter and have eight arms, I recommend the DX to anyone who is required to take work documents home to read. I guarantee the DX weights a hell of alot less, takes up less room, is easier to read and will even give you a chance to read recreational material too.