0 of 1 people found the following review helpful
You can't get better,
This review is from: Sennheiser CX 500 - High Quality Noise Isolating Ear-Canal Headphones With Volume Control - Black (Electronics)
These are simply amazing -- mind blowing bass and clarity and other people on the train don't hear anything. Staggering. Uncomfortable for more than 3-4 hours, so experiement with the different bud sizes. (Passive)noise cancelling is amazing on both.
Only negative is that they are identical to the cheaper CX400 except that they have an inline volume control -- and it's a lot of extra money. The CX400 also has a short cable and an additional extension cable, whereas the CX500 just has the long cable. This is a plus for the CX400 if you tend to keep your MP3 player in your shirt pocket.
I would never consider anything else than the CX400 or CX500.