The New York Times has an article about the Lyric hearing aid, which is worn deep inside the ear. According to the Times, the few people that have tried the Lyric love it. One reason they love it is because the Lyric does not have to be taken out of the ear until the battery dies. Are you one of the people (about 500 according to the Times) who has tried the Lyric?

Related on About.com: Lyric page in Hearing Aid Gallery