This post is part of a special annual report -- Top Stock Picks '09 -- in which TheStockAdvisors.com asked 75 leading newsletter advisors to select their favorite investment for the new year.

Italy's Eni SPA ADR (NYSE: E) has one of the most successful and fastest-growing E&P operations of any major integrated energy firm," says energy expert Elliott Gue.

In his The Energy Strategist, he notes, "And despite its defensive characteristics, Eni offers an impressive 8.5%, the highest of the large integrated oils."

"ENI derives close to three-quarters of its operating income from exploration and production (E&P) and just 3.8% from refining and marketing.

"Thus, Eni has more leverage to E&P than most large integrated energy firms and less exposure to refining margins. The company's other main business is gas and power, accounting for close to 22% of operating income.

"Eni has one of the most successful and fastest-growing E&P operations of any major integrated energy firm. In the third quarter, Eni's production grew to 1.764 million barrels of oil equivalent per day (boe/d), up 6.3% over the same quarter a year ago, the fastest growth of any integrated firm in my coverage universe.

"And Eni has a large number of new projects scheduled to come onstream over the next three years that are poised to power further production growth.

MOST NOTEWORTHY: The software sector, Ericsson, Paccar, Eni SpA and Valueclick were today's noteworthy downgrades:

• Bear Stearns downgraded the software sector to Underweight from Market Weight, citing valuations and increased risk to 2008 IT budgets.
  
• Ericsson (NASDAQ: ERIC) was downgraded to Equal Weight from Overweight at Lehman and to Neutral from Overweight at JP Morgan following the company's Q3 profit warning.
  
• Paccar (NASDAQ: PCAR) was downgraded to Underperform from Market Perform at Wachovia. The firm believes Street estimates are too high due to weaker-than-expected North American unit production.
  
• ABN Amro downgraded shares of Eni SpA (NYSE: E) to Sell from Hold as they expect the company to invest significantly more in its upstream activities than guidance suggests due to cost pressures.
  
• Oppenheimer downgraded ValueClick (NASDAQ: VCLK) to Neutral from Buy following the Q3 pre-announcement and guidance.

OTHER DOWNGRADES:

• Merrill downgraded Equity Lifestyle Properties (NYSE: ELS) to Neutral from Buy.
  
• Autodesk (NASDAQ: ADSK) was downgraded to Neutral from Buy at UBS.
  
• JP Morgan downgraded ACA Capital Holdings (NYSE: ACA) To Neutral from Overweight.
  
• Citigroup downgraded Vimpel Communications (NYSE: VIP) to Sell from Hold.
  
• Yahoo! (NASDAQ: YHOO) was downgraded to Hold from Buy at Gabelli.

MOST NOTEWORTHY: General Motors, Green Mountain Coffee, Orexigen and Norsk Hydro were today's noteworthy upgrades:

• Banc of America upgraded shares of General Motors Corporation (NYSE: GM) to Neutral from Sell as they believe the agreement with the United Auto Workers union offsets a worsening outlook for sales.
  
• Piper Jaffray upgraded shares of Green Mountain Coffee Roasters (NASDAQ: GMCR) to Outperform from Market Perform after a meeting with management as they believe shares offer a compelling buying opportunity at current levels based on their 2009 estimates.
  
• JMP Securities upgraded shares of Orexigen Therapeutics (NASDAQ: OREX) to Strong Buy from Market Outperform as they believe the company's lead product candidates, Empatic and Contrave, could become front-line therapies for obesity due to improved durability of efficacy, increased safety and tolerability, and lack of addiction.
  
• Norsk Hydro (NYSE: NHY) was upgraded to Buy from Hold at Citigroup. The firm sees upside in the stock from the volume growth and further improvements in downstream operations.

OTHER UPGRADES:

• Lehman upgraded Temple Inland (NYSE TIN) to Overweight from Equal Weight.
  
• Ciena Corporation (NASDAQ: CIEN) was upgraded to Buy from Neutral at Merrill Lynch.
  
• HSBC upgraded ENI SpA (NYSE: E) to Overweight from Neutral.
  
• Nollenberger raised shares of Symyx Technologies (NASDAQ: SMMX) to Buy from Neutral.