I have this debate with teachers and librarians all the time.  Which is better, an Ereader or a real book?  For my money, it’s the Ereader.  Yes, I know if the power goes down or the internet is down, a book comes in pretty handy.  But Ereaders and tablets are just going to get better and better.  Pretty soon we’ll see them with longer lasting batteries and better “always online” connections.