On the advice of a forum member I purchased the Custom 1s. At first I was unhappy with the sound but discovered the need to have them "fit" inside the ear canal properly. I have a high end hearing loss problem so I wanted a low priced bud ($70-80) range that would give me a clear sound. I was happy with the sound but I didn't like the plastic wrap arounds that came with them. I find it bulky and awkward. Also I find with some minor movements of my jaw the sound vanishes. I can't tell if I am doing something wrong when I fit them of I have a hard to fit ear canal. The bottom line is I am returning them. Because I like the sound quality when it works, I am now looking at the S4s, which also fit my price range. I have yet to find a release date for them other than April. When will these become available and will they have the same sound quality as the Custom 1s. I see the design is different( no plastic wrap around piece) so that is a step in the right direction .
Thanks