Hey rb, the Logitech UE4000 might be up your alley.
It's $99, closed, portable, has a warm consumer sound, good with a mix of genres (you won't get audiophile grade sound but hey, it's for use on the go). It doesn't leak at the volumes I listen to; I also find them to be very comfortable for an on-ear headphone. Finally, their styling is also pretty neat ('nice and clean'), I've got the white ones. Give them a try at the local Apple store or whatever, see how they work for you. Good luck!