It is time for me to move up from MX880 to MX980. So many times, the volume control of MX880 "caught (rubbed)" edges of books, desk when I stood up - It was annoying enough, I bought replacement warranty within 3 days. How about MX980 ? By the way, I sometimes use a silicone adapter to tune down the treble, it also bring out more bass. (The treble is fine for most people; sometimes I just want lesser.) The new sound is still lovely.