I had these headphones (Sennheiser HD 555), and I totally loved them as well. They are easily the best sounding headphones I have ever tried on. BUT they are "open" headphones, which means much of the sound they produce escapes them, making your music audible to anyone around you, making them "uncouth" for use in public areas, such as on a bus, or plane. They also allow outside sounds to be heard while they are on. I bought them for the intension of recording music and as a portable headphone, but i had to return them since I could not realistically do the latter (unless I wanted to be hated wherever I went!!). But for use at home, these are probably the best priced for the quality sound they produce and are extremely comfortable.