I agree with Roberta, but you can take it one step further. You can go to each website and find the list of other fund families supported. Then you can check each individual fund to see if it has a transaction fee.

 
Paul 

why would u roll over half of ur old 401k into ur new employer's 401k and not roll all into a self directed roll over account? U can leave your funds invested as they are, move them over and then u are for life free to choose how to invest that amount.

If you would like to buy  non Vanguard funds then a rollover to Vanguard  Brokerage is what your looking at.  I have both a regular Vanguard account and a brokerage account. I own Fairx thru vanguard Brokerage. It cost me $20, aS A vOYAGER MEMBER. THAT IS YOU MUST HAVE 100K IN VANGUARD FUNDS.. Otherwise it cost a little more . Rich

I believe the fund families are similar in that if you want to trade in non-family funds, then you will have to open a brokerage account there to do so. The fees for such an account will depend on the size of your holdings with that fund family and the number of trades. The fees to buy and sell particular funds will depend on the relationship the brokerage has with that fund family (i.e. whether they pay "shelving fees" to the brokerage).

You can also open a brokerage account with a discount brokerage not associated with a fund family such as Scottrade, Schwab, Wells Fargo, etc. and trade in the funds offered through that brokerage.

With the broker as an additional middleman to feed, this may end up costing more than buying directly from the fund family whose fund you want to buy, but may be more convenient if you will do many trades between fund families and/or want fewer statements to manage.

Another Rick 

Thanks to all for your advice. Since I have some time to investigate my options, I think I really need to determine in advance which funds I want to invest in, and for those outside the VG or TRP families see if/how they're available.    T