Investors interested in stocks from the Medical Services sector have probably already heard of Concentra Group (CON) and Cencora (COR) . But which of these two stocks presents investors with the better value opportunity right now? Let's take a closer look.The best way to find great value stocks is to pair a strong Zacks Rank with an impressive grade in the Value category of our Style Scores system. The Zacks Rank is a proven strategy that targets companies with positive earnings estimate revision trends, wh ...