Here are three stocks with buy ranks and strong growth characteristics for investors to consider today, September 4th:CSG Systems International, Inc. (CSGS) : This revenue management, digital monetization, customer experience, and payment solutions company carries a Zacks Rank #1, and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 4.9% over the last 60 days.CSG Systems has a PEG ratio of 1.14 compared with 1.91 for the industry. The company possesses a Growth Score  of B ...