Ameritrade, Fidelity, or Vanguard?

I've narrowed it down between these 3 companies to rollover a inherited ira in, but I'm contemplating which service to use? I intend to learn options and bonds, and very little mutual funds which seems like Ameritrade would be wise to go with. On the otherhand, it seems like fidelity is a good choice, and I'm hearing people say Vanguard is cheap (looks like for mutual funds).

Which one would you guys pick, given the situation?

You can buy low cost spartan funds from Fidelity as well, so it won;t make difference for cost. I used both Fidelity and Vanguard. Why I prefer Fidelity is
1) Very Knowledgeable Staff - they can help you many times
2)Local offices for any assistance needed

Fidelity for customer service and charting and then trade Vanguards" securities for low cost ratios.

I can only choose one at the moment. I hear fidelity is good, vanguard is cheap, and ameritrade is good for options. I'm still at a standstill ha.

I like Fidelity's trading platform the best. But I guess it is all a matter of what you want to do.