yea I love the dx in many ways in the 1+ week I have had it but I have many pdfs that I thought I would be enjoying that I would have to start bookmarking to make usefull. and even there (I only looked for a minute) I did not see a way of putting the chapter name, I guess I'd have to remember that chapter 16 was "setting up sendmail" in my big linux book.
I think its going back on that alone. the convenience of not carrying the book evaporates when you have no easy way to navigate the book. shame on me for not investigating "natively supports pdf" before the purchase. Its just I saw this work on another reader and of course it works on the pc so I just assumed.