I have the NW-S703F and I love the earphones supplied, while the noise-cancelling feature is amazing. I went to an amusement park a few days ago and used the noise-cancelling feature while I went on all the rides, including the roller-coaster. Needless to say, all the screams from the other people, not to mention loud clanking noises from the rides, were sucessfully blocked-out and I was able to listen to great rock music while speeding on thriller rides. I even belted out a couple of tunes on the Pirate Ship! One problem with the earphones is that the music tends to sound, while not exactly muffled, rather thick. I got used to it, but it can also easily be amended by using the VPT such as studio, which makes it sound slightly more echoey and lighter.