I have been using Audibel hearing aids over the last four years. David Ruark has given me great service and he even came to my home to help me install my surflink. After a couple of years, we upgraded our T.V. and I asked David if he could help me again install my surflink to our new T.V. He was more than happy to help. I enjoy my office visits, David and his secretary are always so willing to take care of any problem I might have.