Recently I started giving it some thought again, and decided to try to grow it a little with the least amount of effort by transferring it from Scottrade to Vanguard and investing in a diversified portfolio of index funds. I sold all the stocks and spent hours pondering the matter of asset allocation, reading various blogs and articles on the internet.
I finally decided to follow Harry Browne's model, 25% in Vanguard Total Stock Market, 25% in Vanguard Long Term Treasury, 25% in a gold ETF, and 25% in . . .

Which brings me to my question, after this long boring post (Sorry). Since Vanguard's Treasury Money Market fund is closed to new investors, what should I do with the cash portion of the portfolio? . . . another Vanguard fund? . . . a non Vanguard fund like Fidelity Treasury MM? . . . or something else entirely?
Help! I need guidance.
Thanks,
Harriett