My thoughts:
I like the bigger screen, and I really like the ability to switch from portrait to landscape mode (and the ability to lock the screen, so it *doesn't* switch if I want to read in bed).
I love that it can display pdfs.
BUT
It can't highlight and annotate pdfs? (Page 66 of the user's manual) That makes it 50% useless for the kind of close reading and data-gathering I need it for. Not only that, it can't even *search* pdfs! It searches only the metadata, not the body of the document. That takes care of the other 50%.
Wait--in one place, page 67, it says it *can* search the document (as long as it's not one of those blasted every-page-as-a-separate-image pdfs). In another place (page 72) it says " For PDFs, Kindle searches for the term in the metadata only. " So I'm not sure what to think on the search issue.
But not being able to annotate is likely to be a dealbreaker for me all by itself.
I also don't like that it 1) STILL doesn't have folders and 2) doesn't support ePub.
I think I'm going to wait and see what Astak and Plastic Logic are going to offer in this department. Or maybe the Kindle 4 will be able to search, highlight and annotate pdfs.
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I've been skimming (rather hurriedly, I admit) through the user manual for the Kindle DX, which is online at
http://s3.amazonaws.com/kindle/KindleDX_Users_Guide.pdf, so that's where I got this stuff. I'd be happy to have it turn out that I'm wrong; that I'm misunderstanding something in the user's manual, or that the user's manual is an early, hasty effort, with mistakes that will be corrected before the DX comes out.