TSC Ratings provides exclusive stock, ETF and mutual fund recommendations using proprietary tools. Our "safety first" approach aims to reduce risk while achieving performance on a total return basis.The following mid-cap companies have market values of $500 million to $10 billion and receive "buy" ratings from our proprietary quantitative model, which considers more than 60 factors. The stocks are ordered by their potential to appreciate. Landauer ( LDR) offers personnel radiation monitoring to measure the dosage of X-rays, gamma radiation and other penetrating ionizing radiation. The numbers: Fiscal second-quarter revenue increased 5% to $25 million as net income and earnings per share fell 16% to $5.4 million and 58 cents, respectively. Operating margin remained steady 42% and net margin fell to 22%. The company has no debt or interest expenses, and a quick ratio of 1.9 indicates ample liquidity. The stock: Landauer has fallen 10% in 2009, underperforming the Dow Jones Industrial Average and the S&P 500. The stock offers a 3.2% dividend yield and trades at a price-to-earnings ratio around 27. New Jersey Resources ( NJR) is an energy-services company that provides retail and wholesale energy services to customers in New Jersey and other states from the Gulf Coast to New England and Canada. The numbers: Fiscal second-quarter revenue declined 20% to $938 million as net income and earnings per share surged 183% to $36 million and 83 cents, respectively. Margins improved a bit during the quarter as operating margin inched up to 6.2% and net margin climbed to 3.8%. The debt-to-equity ratio remained low at 0.6, but a quick ratio of 0.4 indicates a weak cash position. The stock: New Jersey Resources has fallen 4% in 2009, in line with the Dow. The stock trades at a price-to-earnings ratio of 14 and offers an attractive 3.3% dividend yield.