I am not sure about the bad reviews on this board, I bought a pair and they are a little tricky to get into place in the ears, but once fitted they stay in place and are comfortable for a long time. I love how well they stay in place once fitted. The sound quality is better than Samsung's and HTC's earbuds and better than other cheaper ones I have used. They have good clarity and great bass. My only complaint is that the treble can be a bit harsh with some music, but I can tolerate it. I feel they are a perfect gym IEM.