According to The Wall Street Journal's Weekend Edition, investors are in for a treat:

A potentially cutthroat price war is shaping up between two of the biggest firms in the exchange-traded-fund business.

In coming weeks, Vanguard Group plans to roll out an ETF designed to directly undercut one of the biggest products on the market, from rival Barclays Global Investors, a unit of Barclays PLC (NYSE: BCS).

Vanguard is launching the Vanguard Europe Pacific ETF to track the MSCI EAFE index, which provides investors with broad exposure to developed-market equities.

The fund and its obscenely low 0.15% expense ratio take direct aim at Barclays' iShares MSCI EAFE ETF, which has an expense ratio of 0.35%.

Given that low expenses are perhaps the single greatest predictor of a fund's performance, this is awesome news for investors. Baseball speedsters like Kenny Lofton and Carl Crawford are often seen as reliable because it is said that "speed never goes into a slump." A power hitter like Barry Bonds or David Ortiz might lose his home run stroke for a while, but base-stealers can always run when healthy.

Low-expense funds are the Rickey Hendersons of personal finance, and as expense ratios continue their descent, investors will reap the rewards, although the profits of fund managers may decline.

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.

MSCI EAFE Value (NYSE: EFV), an exchange-traded fund, is the top speculative selection for 2007 from Leonard Goodall, editor of No-Load Portfolios.

"More aggressive investors should give international exposure to their portfolios, and this exchange-traded fund tracks the value sector of Morgan Stanley's Europe, Australia, and Far East benchmark. Every investor today, from very conservative to very aggressive, should have an international component in their portfolio.

"This fund will enable the investor to profit from worldwide growth patterns, but the fact that it emphasizes the value stocks in the index means that it should also provide some protection against market downturns.

"Because the fund is new, it has no long-term record, but it has a one-year return of 29.9%. Investors should not buy this fund to "chase performance," nor should they expect that return in the future. Rather they would do well to add ETFs to their holdings if they want to build a balanced, well-diversified portfolio."

To see Leonard's favorite conservative ETF for 2007, click here.