Prosfull balanced sound
good fit without custom molds
noise isolation
"push-to-hear" device is convenient
Conshave to squeeze bud end and position over and behind ears - a little bit of "work" to get them in place.

Review:Finally, really great sound through earbuds. I've use the "3" series (SCL3 and EC3's) from shure, but no other quality noise isolation buds. Those were very good, but did lack in the low end. Having the low-end in these not only helps the low-end, but fills out the sound overall. I did try some "EB" version of UE relatively inexpensive buds, and found that although they had tons of bass, it was not natural sounding. These are incredibly well balanced.
This is what audio phones should sound like!
Simple as that. Correct sound. Great isolation.