Investors looking for stocks in the Containers - Paper and Packaging sector might want to consider either Greif (GEF) or Packaging Corp. (PKG) . But which of these two stocks offers value investors a better bang for their buck right now? We'll need to take a closer look.Everyone has their own methods for finding great value opportunities, but our model includes pairing an impressive grade in the Value category of our Style Scores system with a strong Zacks Rank. The proven Zacks Rank puts an emphasis on ear ...