Investors have been on tenterhooks in recent weeks ever since the Federal Reserve said it might start winding down some of its economic stimulus programs.

In the midst of this worry, President Obama hinted that the current Fed chair, Ben Bernanke, probably will not be renominated in the months ahead.

This week on Money Talking, regular contributors Rana Foroohar of Time magazine and Joe Nocera of the New York Times weigh in on the strengths and weaknesses of some of Bernanke's potential successors. 

Plus, a look at the war for market share in digital books following the ruling this week that Apple conspired with publishers to raise the price of e-books.