[Alisa]

Bear in mind that your books have a limited number of licenses (usually six), so you may not want to re-download all your books to your new Kindle, just the ones you want to read now. Unless, of course, you are comfortable removing the DRM at some point for archiving (not sure about the legality of that in Sweden but it's not a difficult process) or you aren't worried about someday losing access to them.

Edit: So I was just reading elsewhere that Amazon now releases your licenses when you deregister. I'm so glad they're doing this now. Before, they left the license with the device. So disregard my original post. Not that you might not still want to liberate your books from DRM in case you ever want to leave the Amazon ecosystem.