My experience with wireless arrangements over the years has been a matter of necessity because of my severe hearing loss. My hearing loss is about 90 dB across the hearing range. Because of this, I must wear hearing aids under headphones to receive sounds properly. Without the hearing aids and just headphones I get only grunts. Feedback is also a problem from the hearing aids when using headphones over them. Also, this is a painful problem because most headphones don't have enough padding and the result is my ears are clamped between the headphones, hearing aids and my head. With some headphones I can stand this for only about 10 minutes and they have to come off. Therefore, I try to not use headphones and the next choice is wireless to my hearing aids. The aids that I have been using for the last several years have had exterior control devices that have a number of functions such as volume control, phone answering, Bluetooth and audio streaming. With my latest aids, Bluetooth is a joke because of the delay. Swinging the AT Pro at a normal speed the target sound is heard when the coil is about 3 feet passed the target. Where's the target? I am now using audio streaming and the response is much faster. I have two devices, one used as the transmitter and the other is the receiver which streams audio to the hearing aid control and then to the aids. This arrangement works much better but it still lacks in dependability and requires handling care. I am jumping up and down waiting to get the new Garrett Z-Lynk system to solve some of my detecting hearing problems.