I own V Moda 100, AIAI tma , ultrasone sig DJ, HD 25. . Working 5 hour sets in a club with all of them V Moda 100 when putting them on would have to be turned on the loudest to mix and when try to wear them in between mixing for protection from loud sound, they would protect the least. Brought along all headphones on different days and when switching over to the second pair from v Moda, I had much better Isolation. Also mailed in vmoda for wing repair and paid shipping out of my own pocket. That was the weak point and cracked at the first fall from the table. Hoping HD 8 will live up to industry expectations and will become a new standard. Hope that answered you!
You have the ultrasone signature dj and you are still looking? Any reasons?