Pros: cheap, big bass
Cons: mids nonexistent, highs are harsh, distorts music
These work as decent earplugs, but I would not use them for anything else unless I had to. These were some of my first non-ibuds earphones and they were really good compared to the ibuds, but that is not saying much. I was really happy with them because I had nothing to compare them to at the time, so I tried making music with "Reason." I would listen to the music through them, then through the crappy stock macbook speakers, and the speakers had sounds that the earbuds did not, and vice versa. From this, I developed a sneaking suspicion that these were not the proverbial "bees knees" and were actually kinda bad outside the big bass. This was confirmed when I got the Sennheiser HD555's, those blew me away.
SO if all you have is 10$ and you want big bass, these are fine, but if you can spend 19$+ then I would get some cheap koss', maybe the portapros or the KSC75's