Of all tried out variants, normal inEar, inEar Neckband, inEar with external earpieces of the Sennheiser sits with its inner strap best.
The optimal positioning in the ear that can not unintentionally changed even with strong sporting activities and the very good quality of inEars you really get a great background music during sports.
Contrary to some statements, I feel very good bass and the sound overall very balanced. Many expensive inEars other manufacturers that I had tried lately, sounded some cases significantly worse, but were playing sports completely useless. The most important decision for good bass is selecting the right size of the ear rubbers, are these the bass is selected too small bad. But because several variables are supplied by ear rubbers is also not a problem.
