The price of these has increased quite a bit. I think for the same money there are better options, although they are indeed very satisfactory, unless you expect perfect sound. For perfect sound, just headphones are not enough and it requires a lot of research...

Absolutely amazing Chi-Fi headphones. They offer perfect sound with ease. Wonderful detail in the sound, warm and powerful but not overwhelming bass, nice midrange, I can hear highs that I've never heard before in songs I know without piercing the drum. Their stereo is almost 3D surround.
Until I used them, I recommended Sennheiser to everyone, no comparison, these KZs are better than the over-the-ear Sennheisers that cost 250 euros. The cable is indeed durable but easily gets tangled in the pocket.