Summary: I bought these over 18 months ago, and they are still going strong without any issues at all. I've had some expensive pairs of Sennheisers and Bose earphones before and they both broke within 6 months. I also had a pair of cheaper Chinese headphones which also didn't last long. These are the best I've had and I use them every day on my commute.
Summary: Seriously, these are the best earphones I have ever had. The sound quality is top notch, the "Clear and Detailed Sound" in the name is true. And oh wow are these things durable! As I write this, I have had my pair for nearly two years and they still work perfectly! And it's not like I'm a light user, oh no. I listen to music whenever I go out, so my iPod - and therefore these earphones - are in use for maybe hours at a time, nearly every day.
Summary: These ear phones were reduced in price so I felt I was getting a bargain and having used them I feel more so. The sound quality is superb. I used them first on a long haul flight and they were good enough to drown out aircraft noise. I experienced no distortion of sound and they fit comfortably in my ears. The delivery was swift within a couple of days. Altogether a good buy.
Summary: Sennheiser CX 280 Ergonomic Ear-Canal Earphones with Clear and Detailed Sound I have rarely read such disparate Web reviews about a headphone. Initially, on first listening, and after struggling to lever and push the CX280 out of its ridiculously tight packaging from China, bass is virtually absent. After a few hours of playing loud bass heavy music the bass does come forward, and is well controlled, and tight.
Summary: I purchased these in ear canal phones, as I have a Sony Walkman and cloth ears, so the Sony earphones that came with it weren't great, as the sound is very low indeed. These in ear canal pieces cancel out outside noise, so you get a great clear sound without having to perforate you eardrums. Great value and usual quality from Sennheiser.
Summary: I have never owned a Sennheiser product but I do know that they are known for sound and build quality. My uncle had a pair of very expensive Sennheisers about 20 years ago which still work, which must tell you something about the company. I thought I'd buy this pair for its affordable price and good reviews on the internet. Well I have them now and I really do love them. Best earphones I have ever tried so far.