I already own the iGrado more than a year. At first I was surprised how well the headphones sounds; how much more sound detail it can represent compared to the Sennheiser PX-100 and PX-200. Really great mid and treble, a broad stage, the bass is good for importing. Where there is light, there is shadow: The comfort is very chaotic. The headphones sit very firmly behind the ears and can not be selected on the bracket so that the bracket between the head and ears can press. People wearing glasses will get additional problems. Cable and ear pads look very cheap. The cable twisted with time. Unfortunately, the isolation of the outside world is not that great because of open construction. On my daily train trips I have therefore set the volume higher, unfortunately thus losing the musical enjoyment. Unfortunately Grado makes no closed headphones - which I would have long ago worried due to the absolutely amazing sounds of iGrado. Conclusion: For train and bus only limited suitability; otherwise absolute reference for mobile headphones.