Old fashion but acoustically choice

I have over 20 years of age use the model identical Koss Porta Pro without control in the cable. Since I wanted to control my mobile phone via cable remote control, I have tried different brands with their models. From Sennheiser devil and Klich, I am then (again) landed at the Porta of Koss. In-Ear listeners were playing sports often problematic because changes in a small change in position of the plug in the ear, the sound immediately.
My preferred playing sports music taste is R & B, rock and folk. For my subjective taste the frequency width is ideal reproduced with this headset.
Yes, the metal strap not only looks like something out of the 70's and the folding function is already getting a bit old. But why should be changed a little, if it works.
Actually heard at least one star to the thin cable and the haptic not particularly successful key withdrawn. But the acoustic characteristics more than make up for it.
Who does not disturb the thin cable and want to have a headset with superior acoustic characteristics, should pull the Porta definitely on the short list.
** Warning: the acoustic quality applies only to the original ** how to distinguish truth and falsehood, is well described on the website of the company Koss..