<prompt> Human: Hey there. Ive had my 401k on auto-pilot for some time and Im currently analyzing my Roth IRA options to set up a lazy portfolio as well. I like the idea of the threefour index mutual funds described on Bogleheads stocks, bonds, international. I figured Id choose the stocks first... Question is: What is your choice of stock index funds? Everyone I consult seems to like the Vanguard Total Stock Mkt Idx Inv VTSMX but I just wanted to do a comparison to the other large growthblend funds out there for the sake of education: Vanguard Growth Index Fund Inv VIGRX Vanguard Growth and Income Inv VQNPX Vanguard LargeCap Index Fund Inv VLACX Vanguard 500 Index Fund Inv VFINX I see they all have comparable risk potential, 5-10 year average annual performance, and other metrics. I understand the importance of the expense ratio, in which case the VFINX 500 is comparable to the VTSMX.Is there a clear winner here?  <response>: VFINX holds a subset of stocks of VTSMX. VTSMX basically has more exposure across the stock market and gives you slightly more diversification for the same cost. 