Bob, sometimes it is good to have both, especially if you really want to keep a copy for several years and still be able to read it. I have some books in my library that I would love to have as ebooks so I could read them again on my reader. I also have some relatively new pbooks with ebook copies (some came free with the pbook from Baen - others I bought both).
So this is not a solution to your two choices but may just be a third choice. Sorry.
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