Office 2013 or Office 365? Which is better (cheaper) for you?

Confusion has reigned on which to get, as Microsoft has joined the increasing number of software companies trying to get you to "rent" software, as opposed to just owning it.  So what to do with the new version of Office?  Personally, I say get a copy of Office 2010 and be done with it (while you can still get it cheap), but if you must insist on the newest of software, check out this Computerworld article.  They have a calculator telling you which option is best for you.  All you do is indicate which programs you primarily use and how many computers you intend to use them on and....bam!  You get a cost for each.