I owned:
Creative Aurvana Live! - good. my gf uses it. I think it lacks punch but sounds good. Cable is bad and headband small.
Creative Fatal1ty mk2 - muffled sound and overwhelming bass. Great but sweaty cushions.
Brainwavz hm5 - Fantastic pads (now my gf uses them with CAL!) but too tight as my head hurted! Also, no bass almost at all.
Creative tactics Sigma 3D - okish headphone. Too muffled but fun to listen too. comfortable but squeeky build.
Kingston HyperX cloud - good headphone but I returned it. I couldn't get the comfort right. Could sound more alive
A lot of in ears from Sennheiser and AKG (they always break)
and few other I don't even remember, so not a big experience with headphones as most is gaming stuff.
After reading somewhere here, I decided to give Koss Porta Pro a try. It looked uncomfortable and like some cheap headphone. it cannot sound good I thought... oh boy... It is just amazing! The sound is warm, full and open. The headphone is not fatiquing and is very comfortable for long wearing time(NO SWEAT).
I went back to the big market with a friend from work and we tried all sort of headphones (expensive sony, akg and likes). Then I asked him to try this (pointing at porta pro). He did not wanted to but I insisted. haha, the look on his face
edit: But I think if price is a non issue, I would probably recommend Fidelio headphones. They sound fantastic too