what I use actually is a pair of MIE2i Bose earbuds and I simply cover them with QC3s or QC15s to achieve noise cancellation.
Actually in this scenario with the QC15's, I get 4 points of noise blockage, the QC15's physical blockage, the QC15's external filter, the QC15's internal filter, and the MIE2i's physical blockage. Sounds a bit wasteful but I already have the MIE2i earbuds, and they have the mic and remote control, and I already have the QC15s, so why not combine them both and get the ultimate usage/noise blocking combo?