ProfCrash thank you for your input. Ahem, my view of DRM has always been that when I buy an ebook I am buying it for good to read at any time in the future on any device I wish to read it on. I have read much more on this site now about the problems people have encountered with the Kobo Aura and with Kobo customer service in general. This leaves me really leaning to the Kindle PW. My very large Calibre library is all in epub format at the moment, though this will just mean an extra step (conversion to mobi) when I wish to read a title on my new Kindle.