opening an IRA, help please

[emartin762]

Right now I have enough and am planning on opening a traditional IRA account. Im wondering, is it better to use scottrade if I plan on investing in like a vanguard index fund and maybe mutual funds, or is it better to go through vanguard itself?
Also I have had a Legg Mason account for a while, would there be any pros or cons in opening with them?

Sorry if this isnt very clear, im just not sure about the kind of fees involved with the different investing places.