This was an interesting interesting one.
HD25 - Alu Ltd
1) Brighter some simbilance on some tracks
2) Tighter Bass, very fast decay, but somewhat lacking body
3) Comfort is subjective, but I found it less comfortable than the ESW11s
1) Less precise, more musical
2) Full bodied bass without being boomy, not quick decaying like the Senns
3) Somewhat more comfortable