If you post a list of funds available in your accounts (include ticker symbol, fund name, and expense ratio if you can), people will comment on which are likely the best. Basically the recommendation is to go for the broadest, lowest cost, stock market index fund. Vanguard Total Stock Market Index Fund (VTSAX, VTSMX, and VTI) basically sets the standard to compare other stock market funds to. You absolutely do not want high-cost, actively-managed funds or loaded (commission paid to salespeople) funds.
Hopefully the default fund in your husband's 401(k) was a target date type fund based on his age (this would be the best choice for most people who do not take the time to choose an allocation for themselves). These typically hold a stock market index fund and a bond market index fund (often a domestic and an international version of each) and adjust the ratio to be more conservative (more bonds) as they approach the target date. You can generally accomplish the same thing at lower cost by holding the constituent funds directly and taking a few minutes to re-balance your portfolio occasionally (lots of people do this once a year).
