Either one works. An online discount broker is just that. I would use the one that you like looking at. After you have signed up and getting use to the tools then you will figure out what you like and don't like. Then you can shift. There could be an account closing fee. Aside from that you can move freely after that.
How can we disagree if we don't understand what we disagree about.
Truly "ignorant" people are those who call others "ignorant, misinformed, uninformed" and are the same people that have lost an argument.