Pros: Solid mid and bass, price, comfortable, good isolation.
Cons: tremble rolls off/veiled, bass is not very deep, needs a bit more detail.
I rate these IEM 5 stars considering their price.
They are probably the best IEM out there for $100 and below.
These fits well and are very comfortable.
Compared to IEMs of similar price, these are rather balanced with a slightly forward mid and a bit more bass.
The highs are rolled off but I'm ok with that as I don't really like bright ones. It could use some more sparkle though.
Mids are good, quite detailed but still have some room for improvement, pretty good for the price.
Bass is rather solid and punchy, although it's not deep, it does a good job making up for the "lack of details" and masking outside noise, thus "improving" the already good isolation.
I did not have any disconnection issues, the cable snaps into the IEM and is rather secure, but because of the "coaxial" shaped connector, it still rotates after being snapped into place and it's the only thing I dislike about the design.
Oh, and replacement cables. I wish you luck in finding a aftermarket replacement cable that is cheaper than the IEM themselves.
Conclusions: You will probably be very satisfied if you are replacing your free earbuds that comes with your phone or ipod with these, and you won't be disappointed if you are looking for replacement of similarly priced IEM.