If you can possibly swing the DX, get it. The DX is large enough that you can read PDFs that aren't specially formatted for the device. I've never used the Kindle2, but my SONY's display is the same size as the Kindle2. Its too small to show anything unless it's specifically formatted for it. With a larger display the DX can legibly display an 8.5x11 laid out PDF. I've managed to read part of one book that was scanned (as image, not ocr/text) on the DX, but it completely useless on the smaller screen.