Noise-canceling headphones try Sony's MDR-NC300D, I have this headset, is Sony Sony in-ear moving coil earbuds in the best, open the noise-canceling, the sound quality is better than EX700, suitable for listening to a variety of music, very good, high-grade, noise-canceling effect.
Additionally, you can go to Nanjing's electronic digital mall to sell water headphones there to find BOSE's noise-canceling headphones (headset) a few hundred dollars, the sound quality is very good, the noise reduction effect is also good, but pay attention to the connector, to 3.5MM head, don't buy into the airplane connector can not be used.
Alternatively, there are a lot of Japanese noise-canceling headphones within a thousand dollars, Sony, Audio-Technica have their own search to see, but it is not necessarily good to buy, because not many people buy noise-canceling headphones, it would be better to directly on the noise-canceling function of the MP3, a two-in-one approach.