Very satisfied, but also depends on the MP3 player.

1. The sound is great, as long as you truly sometimes takes the time and the earplugs compares and selects the right person. Then finally has in train and bus times alone!
2. reviewers have mentioned that they have returned the Höhrer after half an hour. I can not understand, you have to get used to the rather in-ear. In particular, you have them far enough and really have it, otherwise it does not sound easy.
3. I would use these (and other InEars) only in connection with an MP3 player, which offers quite good sound settings and not only three-four presets. With my iAudio 7 I am very satisfied, after some trial and error.
But are also important quality 4 files. Flac makes with this earphone set finally a real difference to mp3. But if you must have mp3, then it is really necessary with this Höhrern to have high bit rates.
5. comparison with the CX 300 model was a world difference, so you should not put Sennheiser Sennheiser =. Even compared to the Bose InEars I have the CX400-II clearly preferred. The Bose can much more bass, but are not really inear but a mixture and therefore not fortuitous lasssen so many subtleties.
6. I would not use for jogging rather as normal headphones I prefer. But also do not think the cable produces so much sound, but certainly sometimes höhrt movements when you walk.

All in all I am very satisfied, the most fortuitous use in public transport. For jogging, I would look for something else.