I'd say try some Senn HD 25-1 IIs...They're a good all rounder, and the bass is nice for stuff like Metal, but it doesn't overpower. They have excellent isolation, and a straight cable (albeit a little short). They can easily be driven out of your iDevices, and will sound good. Although you could improve the sound with the help of a few apps. I'd suggest EQu.
The biggest issue with these is comfort. When I owned them I maxed out at about an hour before I had to remove them and take a break. If you don't wear glasses though, you should be just fine for the time frame you posted.
Thanks for the quick response! My questions are simple, but I would like to know if possible:
- Is this recommendation based on sound quality over the Ultrasones?
- Or is it based on portability over the Ultrasones?
Also, other recommendations are welcome from anyone (not saying your opinion is bad, I hadn't even considered these until you mentioned them (reviews seem good)).