I am not the best at reviewing.. but here I go.  I bought these headphones just to use on the go and was very impressed by the price performance. I own the flagship Sony H3, and they very similar in the SQ department. It is not bass heavy at all. Any iem with good bass would essentially be an improvement on these. It is not a headphone that with wow factor. It is just great for casual usage. 
 
Design:  It is designed to have the right wire wrap around the back of your neck to help fight microphonics. However, it bugs me a lot. If you don't put it behind your neck, it hangs on the left ear and swings back and forth as you walk. It is a little silly in my opinion. It does stay in as it swings though. I use it for working out. It isn't the best headphone for staying in your ear as you run. I have to wrap it around my ear in order to keep it in as I jog. It gets moist easily and starts too fall out.  
 
Otherwise, it is a great little headphone for on the go usage. Good enough sound quality, and if it breaks, it only cost you 36 bucks to replace. Quite a good deal in my opinion. If you don't feel like putting on full sized headphones, these have good enough quality for any casual usage. It can be a tad boring if you are expecting it to be like a full sized headphone. It is definitely better than your cheap in ear headphones that come with your phone though!

      After owning them for a year, I still really love these headphones. For $100, this was one of the best purchases I have made! The sound quality is on par with Bose, M-50's, and the Grado sr60i. The isolation is good enough that I used them on the bus and in the library often. They sound much more spacious than the M-50, but it isn't the same as open headphones. The bass isn't as heavy as the M-50, which makes it slightly less interesting when listening to trance. I really enjoyed the controlled sound of the bass when listening to most music. I would say that the sound quality is good enough on these, that the price of my Akg q701's may not have been worth it in that regard. If you are looking for great quality, low cost, low impedance, comfort, and isolation just get these. If you prefer heavy bass to a spacious sound, get the m-50s. Also, the head band design is pretty awesome. It is very light on my head. I have walked home from campus on occasion and it stayed comfortably in place. The quality that audio technica provides on the lower end is impressive. However, these do make you look rather odd. Maybe that is a con; it could also be a pro!
 
Anyone who finds themselves needing to adjust the headband size can simply stretch or compress the band to their own comfort. I wanted them tighter, so I compressed the band at the point where they meet the drivers. It is very bendable and can be made more permanent if you just push further. With minor fixes, this does no damage to the headphones. It simply changes the driver angle and width!