"Canada's tar sands are in fact the largest proven oil reserves outside of Saudi Arabia. Tar sands are already 65 percent of overall Alberta oil output and are expected to hit 88 percent by the end of the decade," says Roger Conrad.

The editor of the specialty newsletter, Canadian Edge, reviews a trio of oil sands producers -- Penn West Energy Trust (PWE), Suncor (SU) and Cenovus Energy (CVE) -- that he states "truly worth investing in."

The advisor continues, "Starting with the most conservative, Penn West Energy has inked a joint venture with giant sovereign wealth fund China Investment Corp (CIC) to deploy the latter's capital to develop its oil sands properties.

For 25 years, Steven Halpern, editor of TheStockAdvisors.com, has surveyed the leading financial newsletter advisors asking for their favorite stocks for the coming year. This article is one of 100+ ideas in the Best Stocks for 2008 report.

"A top speculative idea for 2008 is Calgary-based Penn West Energy Trust (NYSE: PWE)," says Jack Adamo, editor of Insiders Plus. "We would consider this stock a 'smart money' buy.

"Commodities guru Jim Rogers said four years ago that energy prices would go a lot higher and stay there longer than anyone supposed. We believed him, and loaded up on energy, with spectacular results. We're up 45% this year alone.

"The thesis still stands. Within five years Mexico, our second largest oil supplier, will be a net importer of oil. Prices will remain high.

"Penn West Energy Trust is out of favor because Canadian tax laws change in 2009, and it faces corporate taxes. But with the units currently yielding 15%, even a few quarters of lower payouts in a recession, and a 30% tax bite in 2009, the units will still yield near 10%.

"With its long-lived reserves, the company has good growth prospects to boot. Great for current income or long-term total return. Buy up to $33.50."

"Since tax changes on Canadian trusts were announced last October, their valuation premiums have vanished," notes Gavin Graham, contributing editor to Gordon Pape's The Income Investor.

And while the advisor notes that takeover speculation alone is not a reason to buy oil and gas trusts, he says, "It would not be unreasonable to wonder if a number of foreign oil companies aren't running their numbers on some of the large Canadian trusts."

One favorite, which he calls a "blue-ribbon energy trust" is Penn West Energy Trust (NYSE: PWE) -- one of the largest oil and gas trusts listed on the Toronto and New York stock exchanges. The firm is involved in gas, light crude, heavy crude, and oil sands operations in north-eastern British Columbia, Alberta, and south-western Saskatchewan.

He notes, "Penn West converted from a corporate structure 18 months ago and therefore has a long track record of proven delivery. It is run by Murray Edwards, one of the most successful Calgary-based oil entrepreneurs. Overall, we believe Penn West offers a good combination of current income and growth potential."

In my recent posts, I have been reviewing the most popular sectors for the coming year, according the the newsletter advisors who participated in the Top Picks from 2007 report. In my last post, I highlighted stocks in healthcare, tech, and telecom. Today, I want to review the resource sectors -- energy and metals -- that remain very popular among advisors, despite being out-of-favor in recent trading.

First, let's look at the metals, where gold remains a popular choice. Sy Harding chose ASA Bermuda, a closed-end gold fund, Curtis Hesler selected Yamana, and Martin Weiss opted for Kinross.

Pamela Aden selected the bullion tracking exchange-traded fund, the streetTracks Gold Trust; Mark Leibovit also chose streettracks Gold. Meanwhile, Mary Anne Aden chose the iShares Silver Trust.

Outside of the precious metals, Tom Bishop chose copper play, Taseko Mines, while Neil Macneale selected steel stocks.

Equally as volatile as metals -- and currently out-of-favor -- has been energy. The energy sector has been high on the list of Top Picks for the past 4 years. This year, however, there is a noticeable shift.