[DNSB]

Originally Posted by salamanderjuice

I'm pretty sure that's only a problem when you want to remove DRM. Kobo says they support Adobe's DRM and don't list a specific version. Or if the book in question is an EPUB3. For some stupid reason Kobo doesn't support EPUB3 in non-kepubs so using ADE DRM'd EPUB3s can end up with a broken experience(Maybe you can rename them .kepub.epub later to get around that?). I just ended up removing the DRM anyways.

More correctly Adobe's RMSDK which Kobo uses to render epubs does not support enough features of epub3 to work with some of the newer ebooks that make use of the more advanced epub3 features, for instance, those required for Japanese language ebooks. This is why Kobo renders epubs with RMSDK and .kepub.epubs (epub3) with the ACCESS NetFront Bookviewer EPUB edition. For a better experience with kepubs, instead of renaming the file, use the KoboTouchExtended driver to convert to .kepub.epub when transferring to your ereader leaving the .epubs in your library. This adds in the mass of spans for more accurate highlighting, setting the cover image properly in the metadata, etc.

Originally Posted by salamanderjuice

Do any of the EPUB stores even use this new DRM? Kobo and Google Play still seem to give the old one in my experience.

I ran into one site that used the new Adobe DRM when I had ADE 4.5 installed. When I went back to ADE 2.0.1 and re-downloaded the epub, it downloaded with the old and long broken DRM. I transferred the ebook to my KA1 using ADE 4.5 and was able to read it on the device.

Originally Posted by salamanderjuice

Having used both the buying experience on the devices/apps is basically identical. Absolutely not a reason to chose one or the other. Using oBoK plugin is arguably easier than Amazon now that everything is in it's own folder and has gibberish names in Kindle PC.

If everything is in it's own folder, that would indicate a newer version of the Kindle app (for PC and Mac). You are likely to see issues if you try to remove DRM from those files. As for the gibberish file names? They seem to match the number displayed for the book when I look in the Kindle store as part of the URL or the mobi-asin number. See this sticky from the Calibre forum for more information Dealing with Kindle for PC/Mac 1.19 and KFX in calibre on issues with the newer Amazon software.