An update on this topic: I've been using the Kindle DX for about a month an= d could actually recommend it for technical material such as datasheet, reference books, etc. Summary below: Positive things: - 9.7" screen allows for single page read of a two column datasheet. To get a zoomed in view of a specific small diagram or table, auto-rotation works well to switch to landspace or you can even zoom in - Contrast is really nice, better than other eBooks like Sony I've seen so far. - PDFs are formatted correctly in all documents I've loaded so far. - PDF gray tones are sometimes difficult to read, specially if they are on a diagram with narrow lines. Zoom in helps, but an option "all B/W" w= ould help. - Search in PDFs work well. - Overall good quality device, light and fast response for what this eIn= k technology is. Room for improvement: - Dealing with dozens of documents is a nightmare. Basically KindleDX presents you a flat view of all documents you have. There is no tree structure available. There is a "collection" idea poorly implemented whi= ch can help a bit, but doesn't work from PC connection and allows only 1 le= vel to organize documents. If you are like me, you want a 5+ deep level tree structure to organize books. The Kindle has 5GB to "store up to 3500 documents" so go figure how to handle that with the current offering. - Even though PDFs works well, the translation from PDF to native Kindle doesn't work for multi-column, diagram rich documents. Don't expect any = way to read your PDFs other than PDF format. - PDF table of contents doesn't work to go where you want, use either "search" or "go to page #". This is one reason to convert to native Kind= le format which supports all this, but as said before don't try that. - PDF document name is all what you will have to identify the document. There are PDF fields like "document title" which are not populated. So either you rename your PDFs or you have to deal with cryptic names vendo= r gives to AN and DS. - There is no way to delete files from Kindle, you need to connect to PC and delete from there. - If you take the time to create a collection from the Kindle, and add some documents there (painful and slow process) you shouldn't rename or = move those files ever, or they will be out of the collection without notice. - KindleDX gives you 3G connection for free forever. But at least in Europe you are allowed to go to Wikipedia and a couple of other places o= nly. Google and other webs are not available here (yet?). It has been a long way since those thick datasheet "books" we used to have years ago - now being able to read them electronically on a slim device lik= e this. But there are work to do for this device to show up all its juice. PS: I'm not linked to Amazon or any other eBook producer in any way. --=20 Ariel Rocholl --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .