Investors looking for stocks in the Shoes and Retail Apparel sector might want to consider either Skechers (SKX) or Birkenstock (BIRK) . But which of these two companies is the best option for those looking for undervalued stocks? Let's take a closer look.There are plenty of strategies for discovering value stocks, but we have found that pairing a strong Zacks Rank with an impressive grade in the Value category of our Style Scores system produces the best returns. The Zacks Rank favors stocks with strong ea ...