Zetaretaculi,
I concur with all of your opinions except the need for another large scale reader. As I have said, I have owned all of the Kindles. The DX was gotten so that I could take pdf textbooks and CutePDF prints with me. I essentially wanted a paperless office. For what was available, it was an adequate solution. Now that I own an eDGe, I would find it to be very poor.
The indexing is as good any desktop pdf reader I have used. I am really astounded by the merging of the annotations and highlights locations in the index. It is rather ingenious and well thought out in its application.
I will probably be supplementing the eDGe with an Alex. I am now spoiled with the use of Android.