What other formats would you need or be able to convert to epub to be able to use them on a Sony? PDF's don't need to be converted, right? If you had the option of only MOBI, Adobe, EReader or whatever others there are, which will work the best on a Sony? I ask becuase I'm looking at Books on Board and notice they have many formats, I don't want to pay for one that is DRM protected and I can't use on my devise.
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