I have 3 different ones, thought i had lost one or 2 of them. I use the digital HD pro on almost all of my hunting, archery and rifle. They amplify great but one issue is determining which direction sounds come from if you only wear one. I choose to wear two sometimes. They allow me to hear whisper conversations and game sounds I can not hear with my hearing impairment. They really work for me. I do find they can be uncomfortable for all day use but not to an extreme. I would recommend them. The models I have are all the behind the ear unit with a ear canal insert.