Investors looking for stocks in the Industrial Services sector might want to consider either ScanSource (SCSC) or W.W. Grainger (GWW) . But which of these two stocks presents investors with the better value opportunity right now? Let's take a closer look.We have found that the best way to discover great value opportunities is to pair a strong Zacks Rank with a great grade in the Value category of our Style Scores system. The proven Zacks Rank puts an emphasis on earnings estimates and estimate revisions, wh ...