[Dutchman1]

Had been using a borrowed K2 and was addicted. Ordered a Kindle GDX as it was latest model and thought the PDF function would be good. At first was impressed by screen - definitely darker fonts and whiter back ground. However there were a few downsides

1) Weight and size - too heavy just like an ipad is too heavy. No longer wanted to carry it with me everywhere and started to think I might as well carry a book around.
2) Contrast and background better than K2 but not enough to make me have to have it. K2 is more than good enough and actually a bit softer on the eyes.
3) I had quite a lot of ghosting problems on occasions (particularly on PDF line diagrams) having to do multiple page refreshes - could just be a faulty unit and this is why I have returned.
4) Graphite / grey surround made it look and feel like an early palm pilot and added nothing to the reading experience. By far prefer the white surround.
5) PDF are easy to put on but colours wash out making them difficult to see in B&W and again you feel you are back in the 80's looking looking at an early IBM. Unfortunately PDF's generally need colour and for me the current technology didn't work.
6) The bigger screen makes browsing easier but lets be honest it's a dreadful experience and I'd rather use my Blackberry which I have with me at all times.

The K2 although not the most attractive and limited by it's small screen is a much more compelling proposition in that it is cheap, portable, always connected, long battery life, has significantly quicker page turns and in addition the text is more than good enough to read. I now just want it to read paperback equivalents without need for colour or back lighting. When colour non-backlit paper like technology becomes readily and affordably available I might upgrade - in meantime it takes a lot to beat the K2.