Exxon vs Chevron: Which Is The Smartest Buy?

The ongoing shale bust is proving to be nothing short of catastrophic, leaving investors wondering whether even the titans will come out of it in one piece. Shale pioneers Chesapeake Energy and Whiting Energy have already filed for Chapter 11 with dozens more expected to follow suit while a colossal wave of asset write-offs sweeping through industry serves as an ominous sign that the sector might never be the same again.  Thankfully, ExxonMobil (NYSE: XOM) and Chevron Corp. (NYSE: CVX),…