Backing up is easy; the real problem, and the important part, is restoring. I can't tell you how many times I've tried to restore a backup, only to find that there was some difficulty that I couldn't get around.
Importer is simple but effective. It backed up my blog. It didn't save the media, but when I uploaded those separately my blog was able to find them. I admit that I may have missed some feature in importer that would let me back up the media with everything else.
This is the best product I've found so far for backing up and
irestoring my blogs