I have one as a backup, as well. I have a Standard Horizon and, while it is fairly basic, it does a nice job. As mentioned above, their range isn't great, but in an emergency, I wouldn't want to be without one. Last fall, I was on shore talking to a friend who was on the water. He was about 1/2 mile out from shore and we were talking like we were next to each other. Weather conditions will affect your range, as well. Definitely worth the expense to have one, in my opinion, even if you never have to use it.