I ordered Bose headphones along with a pair of Sennheiser IE 80 and alternately tried on my iPhone 5s. While it is nice that the noise canceling works well for Bose, because it does, in fact, it is useful to me only not matter if I buy my functioning in noisy environments with an audible noise in quiet environments. I use the headphones less in environments with many background noises, but rather at home on the balcony, etc.
I also need to determine in a direct comparison that the Sennheiser draw but much clearer and finer and guarantee through their classic earpieces in my ears a better fit than the Bose. Good seat also performs here with me to better attenuation of ambient noise, so that sophisticated technology for avoiding them is not even necessary.
Conclusion: I have kept the Sennheiser and 70 saves.