Investors interested in stocks from the Banks - Foreign sector have probably already heard of Shinhan Financial (SHG) and National Australia Bank Ltd. (NABZY) . But which of these two companies is the best option for those looking for undervalued stocks? 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 a ...