"The 'low-hanging fruit' on our buy list includes refiners," says resource expert Curtis Hesler in The Professional Timing Service. Here, he looks at Valero Energy (NYSE: VLO).

"Refiners enjoy a virtual monopoly. The high price of crude has put the squeeze on profit margins -- especially in the case of gasoline, even though it is selling for over $4.00 now. Gasoline always becomes a political issue during election season.

"Nevertheless, gasoline prices are generally rising. The stock market is also getting 'depression minded,' to the point of paranoia; and this fear is dragging some stocks like refiners lower with the tide.

"The current profit squeeze will not be permanent, but Valero has another arrow in its quiver. They are able to process sour crude, which is becoming more prevalent as exporters keep more of the good stuff (light sweet crude) at home and ship the heavy sour crude.

Although he has been maintaining a cautious stance on the refining group, energy sector expert Elliott Gue is now boosting the rating on Valero Energy (NYSE: VLO).

In his The Energy Strategist, the advisor explains, "Valero is now attractive for three reasons: superior geographic exposure, refinery complexity and a new focus on profitability."

"Our caution on the refining group was due to expectations that crack spreads would be weak through the spring, a period during which spreads tend to widen. Overall, this call was correct: Refiners have underperformed the energy patch since mid-March.

"And longer term, I have some concerns about new refining capacity expansions due to come online over the next few years. As this supply comes online, it could put downside pressure on margins.

"But over the next six to nine months, the refiners look like a compelling play. Gasoline inventories are now back in line with seasonal norms; it's likely gasoline prices will now rally further relative to crude oil. In fact, we're already seeing an obvious spike in crack spreads.

Each year Steven Halpern, editor of TheStockAdvisors.com, surveys the leading financial newsletter advisors asking for their favorite stocks for the coming year. This article is part of his 24th annual Top Picks Report.

Valero Energy (NYSE: VLO) is the favorite conservative investment for 2007 from Ken Kam, editor of Marketocracy's Marketscope. He notes, "In spite of nearly doubling its earnings in the past year, Valero currently trades at a P/E of 6.

"I find comfort in the combination of solid earnings, earnings growth, and low P/E ratio. With the economy slowing, many companies are going to find it harder to keep their earnings growing next year.

"I think many people misunderstand Valero's economics because the stock seems to sell off whenever the price of oil drops. But when oil prices go down, Valero's biggest cost of production goes down and demand for refined products increases. How is this bad for Valero?

"Wall Street accords the stock a P/E of 6 because analysts think refining industry profits are going to fall. To back up their view, they point to the fact that there has been a bust after every previous oil boom.

"They may be right, but I think Valero's profit margins will remain high as long as there are no new oil refineries built in this country. The minute we hear that the government has issued all the permits needed to build a new refinery, we'll have roughly two years before it comes online and begins to affect refining industry profit margins.

"We'll be monitoring the situation, but the last time a new refinery was brought online in the U.S. was in 1976, so don't hold your breath waiting for news on this front."

To see Ken's favorite speculation for 2007, click here.