I tried various headphones at a local store including the DT770s,ATH-A700s,SR80s,MS-1s,HD-555,AKG k1518DJ and I must say the DT770 Pro has the best comfort level for me. Very easily worn and comfortable with a good sound signature but my D2 doesnt seem to drive it well since it has a very high impedence, had to max my volume up to hear at a fairly loud volume. But I am not really gonna use it for portable usage neither powering it up with an amp and I want to enquire if using it on your computer direct from your sound card port (x-fi xtrememusic card), will it be able to run to its potential and achieve pretty loud volumes with good quality? Other than that, the MS-1 was good. pretty neutral and balanced sounding and easier to drive but comfort levels on its stock pads were unforgiving, definitely need to change to better ones. SR80s were also good, better in their bass levels. I found the HD555 pretty good with my kind of music and it was also comfortable. the k1518DJ was not good to my ears, found the bass some sort boomy n not nicely produced and exceeding the mids n highs at pretty high volumes. I guess I am now considering between the DT770 Pro and the HD555.