the originals sound great but don't collapse. 2 and the new codec ones should sound the same but do collapse and have improved battery.

have to get the xl pads for them, they make a huge difference in regards to comfort.

the crusher headphones have insane bass but its cool that you can control it. i just found their overall sound boring and lacking. i only tested the sony's in store and not sure if it was with my music or sample tracks. didnt really seem to deliver.

the v-modas are a nice balance, you get good bass but not overwhelming but also really good overall sound.