I appreciated them in earlier hearing aids. Back when the programming of them was still average (voice focus tech was still infancy) they were a godsend. When I was in primary school and HA tech was super average, I had a mini version where a teacher would wear a mic and I had a receiver that went directly to my hearing aids. It was amazing being able to hear the teacher clearly over even average background noise. As mentioned some have gone with BT over induction loops which I can understand. However, on my Phonak, they are super disappointing range wise. As an aside the integrated mic in my Phonak is practically useless. Very disappointing given their cost of nearly $10k AUD.