I still haven't bothered to register my REB1200, but I found that all the multiformat fictionwise books I bought for my EBW 1500 can indeed be downloaded in REB format! In fact, I figured out how to use the bulk download option and had them on my computer in no time.
I really enjoy the color display. Art books, comics that I converted from JPEG with togoware, photos ditto--they all look wonderful.
Thanks for the suggestions.