I love my
Etymotics ER-7 in-ear headphones. They're the cheapest Etymotics with the microphone and song skip button at about $70.
The earbuds fit so far in your ear that you really can't hear a thing with them on. Almost as good as active noise reduction. To make up for this (say if you're biking) they have an app for your phone that uses the microphone to pipe-in outside volume if you desire. Settings tunable for static and level. Pretty cool.
Sound of course is mind blowing as you'd expect from Etymotic.
The
Bose IE2 headphones are now under a hundred, but don't have a mic or button for skipping songs. Seems all the headphone companies conspire to add $20-$30 (or more!) to the cost just to get that feature.