Just gave the DT880's a try. Coming from a couple weeks with the HD 650's, it's immediately apparent how much more detail they have in the upper register. So much more that it feels a bit harsh to my ear. This probably has something to with coming from the HD 650's, but I think I'll be sticking with the Senn's. After a short time with the DT880's I can feel the fatigue coming on. Perhaps there is a particular genre(s) to which the DT880's are well suited, but for now I'm looking for a single pair of all purpose cans. Maybe sometime down the road I will expand my collection, but I'm not there yet.