Rubbish to all other headphones

http://www.m-audio.com/products/en_us/IE40.html
these are the babies, triple driver technology, stunning sound reproduction, and due to being in ear, low sound levels needed, amazing sound isolation too.

Stunning ear monitors, using Ultimate Ears Tech (Ultimate ears are in ear monitor manufacturers/experts)

The cheaper
http://www.m-audio.com/products/en_us/IE30.html
are still good and utilise dual drivers.

Screw the rest, get the best.