http://www.amazon.com/Ultimate-Ears-Isolating-Discontinued-Manufacturer/dp/B0019RBJOE/ (They've gone on some rather excellent sales in the past)

I'm seeing stuff like this for the IE2's

Due to the vented design, there is no isolation of any sorts, which is useful when exercising or partaking in conversation, but completely removes the possibility of enjoying any sort of music fidelity while outside of the house, the optimal use of these headphones is in a quiet and undisturbed environment.

http://www.head-fi.org/t/608285/review-bose-ie2-please-leave-the-pitchforks-and-torches-outside-the-room