Here are three stocks with buy ranks and strong growth characteristics for investors to consider today March 18th:Ralph Lauren (RL) : This company which is a major designer, marketer and distributor of premium lifestyle products in North America, Europe, Asia, and internationally, carries a Zacks Rank #1 (Strong Buy), and has witnessed the Zacks Consensus Estimate for its current year earnings increasing 8.5% over the last 60 days.Ralph Lauren has a PEG ratio of 1.16 compared with 1.25 for the industry. The ...