As I have stated before we live on a busy state hwy. You never know who will be knocking at our door. I would like to purchase some walkie-talkies for Hubby and I to use. If he is out the back of the property and I am in the house and a problem arises I would like to alert him without alerting everyone else. Is there one that is powerful but quiet? How much should I expect to pay for a good set? Thanks for your help.