Bargain hunters should consider VB. Although it has considerably less assets than the previous two options, with an expense ratio of 0.14%, this fund is the cheapest of all small cap ETF offerings. Comparatively, IWM charges investors 0.24% and IJR charges 0.20%. VB's index consists of 1700 separate holdings. As of the end of March, the 10 largest constituents accounted for 2.5% of the fund. Top positions include Whiting Petroleum ( WLL), Rovi ( ROVI) and Ashland ( ASH). Each of these positions accounts for 0.3% of the fund. In 2010, each of these funds has seen nearly identical performance. Therefore, choosing which is best ultimately it depends on what type of investor you consider yourself. -- Written by Don Dion in Williamstown, Mass.