Before switching to the 7290 and a Bluetooth, I was using the Ety-Com from Etymotic Research. It is a bit pricy but works very well in noisy environments such as airports. http://www.etymotic.com/
Etymotic make probably the world's finest portable headphones, the well renowned Etymotic 4P. They ise the same technology for the Ety-Com.
Only downside is the noise cancelling mic is pretty sensitive to wind noise so not so good for outside.