Wow! There are some very interesting technologies today! My staff and I were at a convention last week with our Audigy based group who hook up with manufacturers who spend on average 70 million a year on research and design (that is 350% more than any local based manufacturer can spend on research for new technologies). Patients of ours do not spend more on hearing aids than the local manfacturer amd have a longer warranty (three years) as well as batteries for three years.
We have hearing aids that will bluetooth to your cell phone, bluetooth to home phones, bluetooth to your tv or almost any device. My wife really likes it when I listen to the TV on mute so she can do other things, like sleep for my late basketball games!