"You can invest for all the right reasons and still get the wrong result," notes long-standing turnaround stock expert George Putnam, referring to the poor performance of the pharmaceutical sector in recent years.

Here, in his industry-leading The Turnaround Letter, he offers a fascinating review of 10 leading drug stocks which he now believes offer a combination of growth potential at "pretty cheap" valuations. Here is his overview.

"In 2000 and 2001, when the Internet boom was becoming a bust, many smart investors turned away from technology stocks and put their money into drug stocks. How could you go wrong with the big pharmaceutical companies?

"Demand for their products was growing as the population aged. These companies had huge research
and development programs that seemed to keep cranking out new blockbuster drugs. And most of them had great balance sheets, with many paying handsome dividends.

"Much of this reasoning has been borne out in the intervening years. Many large drug manufacturers have rung up substantial revenue gains over the last decade. So what's happened to the big drug stocks? With few exceptions they have gone sideways or down – in some cases down a lot.

MOST NOTEWORTHY: GameStop (GME), Brocade (BRCD), Tween Brands (TWB), Plantronics (PLT) and Arcelor Mittal (MT) were today's more notable upgrades:

• First Albany sees upside potential in GameStop (NYSE: GME) through 2008 and upgraded shares to Strong Buy from Buy.

• JMP Securities upgraded Brocade (NASDAQ: BRCD) to Market Outperform from Market Perform on valuation.

• Tween Brands (NYSE: TWB) was upgraded to Buy from Sell on valuation at Matrix USA.

• JMP Securities' checks indicate Altec Lansing's im600 iPod docking station/FM radio is selling better than expected, and upgraded shares of Plantronics (NYSE: PLT) to Market Outperform from Market Perform.

• Merrill upgraded shares of Arcelor Mittal (NYSE: MT) to Buy from Neutral to reflect the company's inclusion in the Euro Stoxx 50 Index in September as well as the positive global carbon steel environment...

OTHER UPGRADES:

• Pepsi Bottling (NYSE: PBG) was upgraded to Overweight from Neutral at HSBC.

• Morgan Stanley raised RF Micro Devices (NASDAQ: RFMD) to Equal Weight from Underweight.

• Matrix upgraded Barr Pharmaceuticals (NYSE: BRL) to Buy from Hold.

• Jefferies upgraded Advanced Medical (NYSE: EYE) to Hold from Underperform.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).