Whether the market goes up or down from here, these blue chips are great investments. By Steven Goldberg, Contributing Columnist May 4, 2009 Despite the market's recent resuscitation, many stocks are still trading at fire-sale prices. But which stocks should you buy? SEE ALSO: How To Be a Better Stock InvestorBetween March 9 and May 4, Standard & Poor's 500-stock index surged 34%. Beaten-down "value" stocks and stocks of smaller companies have been the best performers during the recovery. Examples of revived value stocks are Citigroup (symbol C), which tripled from an intra-day low of 99 cents on March 9 to $3.20 at the May 4 close, and Bank of America (BAC), which skyrocketed from $3 to $10.38. Meanwhile, Morningstar's small-company-value index rose 22% in April, and its large-company-growth index gained just 8%. Sponsored Content I'm not jumping on the bandwagon. Given the fragility of the markets, the financial system and the economy, I don't think stocks of small companies or companies with huge problems are the ones to buy. Instead, I think you should put most of your money into the highest-quality blue chips (companies with little or no debt and the ability to generate a lot of cash). Advertisement If you're looking for ideas, Morningstar StockInvestor ($119 annually) is a great resource. According to the authoritative Hulbert Financial Digest, the newsletter's stock picks returned an annualized 2.6% from the end of 1999 through last February, a period in which the broad-based Dow Jones Wilshire 5000 stock index lost an annualized 5.0%. What's more, the Morningstar letter is less risky than the index and tends to do little trading; on average, the letter holds stocks for about three years. Editor Paul Larson says he looks for companies with competitive advantages over their rivals: "My strategy is fairly simple. I focus on high-quality companies, and I buy them when they're cheap." Morningstar's 100-plus stock analysts estimate "intrinsic value" for every company they cover. They compare intrinsic value to a company's share price to arrive at a star rating. Larson then draws up two lists -- a "tortoise" portfolio and a "hare" portfolio-consisting of about 25 highly rated stocks each. The stocks below are chosen from StockInvestor's tortoise, or lower-risk, portfolio. Advertisement Larson's favorite is Warren Buffett's Berkshire Hathaway (BRK.B). At $3,114.90 a share on May 4, the stock has shed more than one-third of its value in the past year. But Larson believes that Berkshire's collection of more than 70 businesses, dominated by insurance, is dirt-cheap. Says Larson: "For a long time, people have been pricing Berkshire as though Buffett were no longer around. But he's still alive and kicking-and adding value. And the balance sheet is still one of the strongest around, even though the company no longer carries a triple-A debt rating." The world's largest and most diverse health-care company, Johnson & Johnson (JNJ), is another favorite. Larson says that the company is largely insulated from economic downturns. "People need to take their medicines regardless of what the economy is doing," he says. J&J is well-managed, has little debt and generates a staggering $1 billion in free cash flow per month (free cash flow is the money left after a company makes the capital expenditures needed to maintain the business). The stock closed at $53.76 on May 4. Defense giant General Dynamics (GD) is another company that's built to withstand recessions. It builds ships and armored vehicles, as well as information-technology systems for the military. "The government has a vested interest in maintaining the health of this company," Larson says. "It came through the Defense Department budget cuts relatively unscathed." The company boasts a rock-solid balance sheet. The stock closed at $54.00. Wal-Mart Stores (WMT), the world's largest retailer, has increased its market share during the economic slump. Its sales of consumer staples at discount prices have been increasing as other retailers have been going out of business. The company's managers are focusing on cutting costs and satisfying customers. Wal-Mart, one of only two stocks in the Dow industrials to climb last year, closed at $50.84. Advertisement As employee benefits grow ever more complex, Automatic Data Processing (ADP) benefits. It provides such services as payroll processing and benefits administration. Its large scale and respected brand, and the high cost of switching to another vendor, give it a big competitive advantage. The share price: $34.86. When competitors were spending enormous sums to build up oil-and-gas reserves during last year's bubble in oil prices, ExxonMobil (XOM) stayed focused on increasing profit margins. Because of that, Exxon can continue to buy back shares, raise its dividend and increase capital spending (at a price of $68.20, the stock yields 2.5%). It's the world largest integrated oil-and-gas company, and participates in almost every facet of the business. Steven T. Goldberg is an investment adviser.