Like any other investing strategy it all depends on you. Goals, savings strategy, risk tolerance, liabilities. Whats the money for? There is no get rich quick scheme to this. There can be home runs, but if you are consistently hitting singles and doubles you'll be far ahead in the end. ETFs can give you diversification, asset allocation and transparency. Which ETFs you choose depend on your goals. They are not generally short term trading vehicles for the average investor.