Investors interested in stocks from the Outsourcing sector have probably already heard of Barrett Business Services (BBSI) and ExlService Holdings (EXLS) . But which of these two companies is the best option for those looking for undervalued stocks? Let's 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 emphasizes companie ...