When investigating alternative pdf e-readers, it is always a good idea to review what the "opposition" can provide. One of the credible, but moderately expensive alternatives is the iRex Digital Reader 1000 series (with 10.2" diagonal screen). Very fortunately, they have selected to make their operator's manual available for download in pdf format. It is available here
http://support.irexnet.com/index.php...nloaditemid=26
This is a serious contender for the display of .pdf documents and others, but from reading this manual and other comments from users on mobileread forums, I personally would not buy this specific version for three main reasons as follows.
1. The screen is glass, and subject to breakage if dropped or twisted by accident. Later models may possibly use a more flexible screen, and this would help considerably.
2. The iRex 1000 ereader does not store the books on internal memory but insists that the SD card be inserted whenever one wishes to read books. Unfortunately this SD card sticks out of the bottom of the reader into one's stomach. I have never read any book with lumps sticking out of the bottom... how uncomfortable.
3. When the battery is being charged you can read books, but the cable connection (USB) is also at the bottom of the reader sticking straight out into one's stomach. Again, this seems a poor choice of location. It would be better placed on the side of the reader.
This ereader has many good features as well, and many people like it. I suspect that the need to keep the SD card in place for book reading has less to do with the claimed need “to be able to remove the material from the reader” as it has to do with the restrictive non-transferable Mobi DRM features. Adobe DE DRM has less restriction. We can only hope that future designers of larger ereaders make a note of these deficiencies and hopefully correct them. Being able to store books and .pdf documents on internal memory, rather than only on the SD card, seems to me to be highly desirable.
Finally, let me encourage all ereader designers to place their operating user manuals on line so that potential future buyers of their products can make a more informed choice of their good and not so good capabilities; each person will judge things differently, depending on their personal requirements. Every manufacturer is usually forced to make some compromises to be able to manufacture at reasonable cost, and it really helps to know what these are before buying these moderately expensive items.