Unless it's a pretty edition, I prefer novels in ebook format. As for other books I prefer buying the real ones. As for mangas, I also prefer buying real mangas. Anyway, I bought my Kobo to read novels on it, not to read other types of books. When I did the cleaning of my novels after buying my Kobo, I kept the ones I could not find in ebook format and the pretty editions like this one:
https://www.goodreads.com/book/show/...ontes-macabres