I tried Vent for Old Republic and couldn't figure out how it works.
Teamspeak was easier when I tried it a year ago.
I think I have a mumble server with room for 15 people. But I never really tried it either. It came free with my minecraft server.
Note: I can barely speak any english. Some people write english as they speak it. That's why they end up with phrases like "Your life is at steak". Me I speak english as I write it, so I even try pronouncing the silent letters.