Microsoft vs. Autodesk: Which Stock Is the Better Buy?

Microsoft (NASDAQ: MSFT) recently announced a new $60 billion share repurchase program. With that kind of cash, the software giant could go shopping for quite a few fellow computing service peers -- including computer-aided design software leader Autodesk (NASDAQ: ADSK) which has a market cap of a little over $60 billion. Which is the better stock to buy, Microsoft or Autodesk?