I have one and i almost never use it. It can greatly reduce your stutter at times, but it reacquires a lot of concentration to use properly. if i am felling unfocused or stressed it can even make my stutter worse. The only times that i ever really use it is in formal environments such as meetings or similar. It kinda works in social situations too but it just feels weird to wear a huge earpiece when hanging out with friends. I was able to get one for free but i would not recommend spending more than a hundred bucks on it. There are however a few apps that you can get for free or for a few dollars that does the same thing. You should try some of those out!