I probably would recommend Nokia BH-505. Smaller, cheaper and still great sounding.

http://europe.nokia.com/find-product...headset-bh-505

It is passive noise cancelling via isolation and it actually will block more of the sound than the BH-905 in most cases.
One thing to note is that it is limited to bluetooth connectivity only. So no cables to connect to non bluetooth devices.

I'm a IEM guy myself and have used nearly every single Shure's (up to 530) and Ultimate Ears (except Triple Fi) as well as some others such as Sound Magic PL-50 (fantastic cheap earphones), Fischer Audio Eternas and some others. But there are times when bluetooth wireless is definitely more handy. No wires and in-built mic.

I can tell you that BH-905 that I reviewed sounded better than Ultimate Ears Super Fi 5 Pro overall. (although, it's not really fair to directly compare IEM to open headphones)