Investors interested in stocks from the Oil and Gas - Production and Pipelines sector have probably already heard of Transportadora De Gas Sa Ord B (TGS) and Williams Companies, Inc. (The) (WMB) . But which of these two stocks offers value investors a better bang for their buck right now? We'll need to 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 pro ...