I've yet to hear an Ultrasone but a harsh high end is what they are known for. The Pro 900s used to be a staple around here! It's a shame they seem to have fallen away... but maybe for the better
I used to hear about them a lot but people always had weird impressions of their headphones,
The Audeze Sine's were another popular closed back portable, I'd check into those
but I think if your handy with modding, the ES10 might be a great choice!
Corrected my last reply, I wasn't very clear... I auditioned the Ultrasone Pro 900 and two different pairs of ATH-ES10 which "was not the sound I was looking for and they were slightly uncomfortable". Already tried the Sines on three separate occasions and their sound (imaging especially) didn't impress me and they too were uncomfortable.