Very satisfied! I purchased these aids 3.5 years ago after having used Widex and trialed Starkey. The aides were wonderful but seemed to loose volume when 2.5 years old and my audiologist sent them to Oticon for repair. Oticon replaced the aids free of charge (less than 3 years old) and the new aides work great. Will try OPN S1 when it's time for new aides