For now I use 3 headphones:
Ultimate Ears Super.fi 5 pro - Great all around but I can never find a 100% comfy seal. Yet they still rock. Great highs and nice kick yet the kick could start a bit lower.
Audiotechnica ATH a900 - Very clear threw all the spectrum, easy to drive, nice bass and highs, mids a bid back. Pretty nice stage.
Sennheiser HD-270 - Hard to drive, bass oriented, good impact but the sound is a bit bloated with bass. The biggest advantage of them is being extremely comfy and warm (they are soo good for winter

).