Drum'n'bass + iphone 3g: Sennheiser PXC350, Beyerdynamic DT770 Pro, Sony MDRXB700

[dabluone]

Hi all (newby alert)

Im after a set of full size headphones to use with my iphone.
I mainly listen to drum and bass and hip hop so some decent bass is required.
Im using using my DJ headphones currently: Sony MDR-V500. With the full volume on my iphone these are not doing the job at all (not being driven) + plus there purpose is for my DJ rig. They are NOT comfortable as I wear glasses and they crush my head after 30mins. Ive also ordered a Fiio e5 (from dealextreme)

Ive got a short list based on reviews Ive read (and price) looking to spend under £150 really.

Sennheiser PXC350
Beyerdynamic DT770 Pro (80 ohm or 250 ohm?)
Sony MDRXB700

I dont have any local shops to try headphones so will be shopping blind. I have tried on some Bose "around ears" and found them very comfortable but for there £100 price tag I felt they were poor construction.

Any recommendations / opinions / advice?

Thanks in advance