I'm getting a microphone/headset soon but I am not completely sure which one I should get. A link to USA Amazon is appreciated. I would also appreciate that NONE OF THESE ARE USB.

I am curious if I need to press some sort of button to activate it/deactivate it in order to speak or do I talk without pressing anything? I ask this because it might get noisy where I live or I have a side conversation with a relative.

Thanks, I really need to know since I need to do TS or mumble or whatever voice chat my FC uses so I can do Coil better, when I do Coil that is.
For example, I screwed up something and when typing, the team would be wiped or I will get hit by an AOE because they need to read and I need to type. Whereas speaking the people will here me and no one needs to type or read