I have the SkullCandy FMJ, V-moda vibe duo, New Apple in ear headphones and Etymotics ER6i.
I would like to say it really depends on what type of sound you prefer. Putting all these headphones to the test they all produce different sound.
The FMJ, very bass heavy, the ost bass of all the headphones. Good built quality and only complaint is that it feels like the bass is the centerpiece of all the sound, also the mic is on the other side compared to the others. Good design with the 11mm drivers and metal materials.
Vibe duo, yes they do not last very long, although their distinctive warm bassy sounds are good. Although their design and materials are good as well.
The apple in ear headphones are very hard to review, this is because compared to the previous two, plastic feels very cheap. Their sound is very distinctive. Less bass but it is more suited to acoustic music as it reproduces those sounds very well.
Etymotics are the most clinical of sounds, very crisp and clear. More for critical listening.