Originally Posted by
txflyer77
I would take a hard look at the Etymotic mc5.
http://www.etymotic.com/consumer/earphones/mc5.html
~40 dB noise isolation and a low impedance of 16 ohms so it won't chew up your battery as fast.
They're also much easier to pack than a full-size set of headphones.
I believe the MK5 is their latest model in that category and thMC5 is an older version.
Can vouch for the noise isolation on these.
If you don't listen at loud volumes the Ety Kids in black is the exact same thing with a max volume limiter and even cheaper.