<prompt> Human: Im investing money in my Roth IRA and planning on putting a large amount in an SP500 index fund. Ive typically heard that Vanguard is the best when it comes to this For example: However, many funds have lower fees than VFINX or even VFIAX Vanguards admiral shares. For example, SWPPX Charles Schwab SP500 index fund has an ER or 0.0337;, while VFINX is at 0.1437; and VFIAX is 0.0437;. Why would anyone looking for a low cost mutual fund NOT pick SWPPX? ALSO SWPPX has no minimum investment vs 3k and 10k for VFINX and VFIAX. I know many SP500 ETFs have expense ratios on par with SWPPX, but I want to automatically reinvest dividends.  <response>: A .04 expense ratio vs .03 is the same argument as a savings account of 7.43 vs 7.42We are basically having a conversation about a pack of gum. 