Investors looking for stocks in the Financial - Investment Management sector might want to consider either Invesco (IVZ) or T. Rowe Price (TROW). 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.Everyone has their own methods for finding great value opportunities, but our model includes pairing an impressive grade in the Value category of our Style Scores system with a strong Zacks Rank. The Zacks Rank is a proven strategy that targets companies with positive earnings estimate revision trends, while our Style Scores work to grade companies based on specific traits.Both Invesco and T. Rowe Price have a Zacks Rank of # 1 (Strong Buy) right now. This system places an emphasis on companies that have seen positive earnings estimate revisions, so investors should feel comfortable knowing that these stocks have improving earnings outlooks. But this is only part of the picture for value investors.Value investors also try to analyze a wide range of traditional figures and metrics to help determine whether a company is undervalued at its current share price levels.Our Value category highlights undervalued companies by looking at a variety of key metrics, including the popular P/E ratio, as well as the P/S ratio, earnings yield, cash flow per share, and a variety of other fundamentals that have been used by value investors for years.IVZ currently has a forward P/E ratio of 8.85, while TROW has a forward P/E of 14.59. We also note that IVZ has a PEG ratio of 1.48. This popular figure is similar to the widely-used P/E ratio, but the PEG ratio also considers a company's expected EPS growth rate. TROW currently has a PEG ratio of 1.73.Another notable valuation metric for IVZ is its P/B ratio of 0.83. The P/B is a method of comparing a stock's market value to its book value, which is defined as total assets minus total liabilities. By comparison, TROW has a P/B of 4.91.These are just a few of the metrics contributing to IVZ's Value grade of B and TROW's Value grade of D.Both IVZ and TROW are impressive stocks with solid earnings outlooks, but based on these valuation figures, we feel that IVZ is the superior value option right now.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Invesco Ltd. (IVZ): Free Stock Analysis Report T. Rowe Price Group, Inc. (TROW): Free Stock Analysis Report To read this article on Zacks.com click here.