Thank you for your fast answer. I am more into IEM, because of the portability. Is good that you mentioned that you like a neutral tonality, because that is very important. I personally prefer an organic/warm tonality. Another important factor is the type of music that you listen. I love metal music, and is hard to find a headphone that sound organic/warm and still keep up with the fast music. For now the best synergy for me is Final Audio Design Heaven VI and Sony MDR EX700, but I am interested in a transparent headphone. I want to try FLC8S because you can tune the sound to your preference. I have AKG K3003i but it sound sibilant sometime, I am very sensitive to hot treble. Anyway, thank you!