I have a good audiologist. I am 55 and wear the most expensive behind the ear Phonaks. While it is life changing for eating out in restaurants or watching movies, I find wearing hearing aids annoying for playing my cello. I seem to hear things I shouldnt (like extra high pitched bow noise). My wife says my intonation is better when I wear them but I cant stand the scratchy noises. I took the cello and aids back to the audiologist who made a custom program for cello playing and strings in general but its not that great. I tend to take them out when at orchestral or chamber concerts. I was thinking about trying Widex but these things are so pricey.