Headset mics are obviously not for everyone. For me, however, they offer a significant degree of freedom to be extremely mobile without worry about the position of a hand-held mic on a boom. Granted, you'll have to change your singing technique to some degree, but that has never been a problem. As for coughing or talking with people, this was quickly overcome by merely setting up the mute switch, which does not make any sound at all when turned off or on. After just one week of using a headset mic, the hand-held mics went into their respective bags and haven't been out since--that was four years ago.

Cheers,

Gary