There is no "slam dunk" index. The S&P 500 has selection criteria, and a rational weighting scheme. Funds that follow the S&P 500 (or any other index) have very low fees; VFIAX has an expense ratio of 0.05%. An index should mean something. The Dow is virtually meaningless. It's a random assortment of companies, whose stock price is combined in an arbitrary fashion, to create an arbitrary number.
3/6/15 at 7:48am