Sell these headphones to me. Which are best? Which have better sound quality? Better bass response?

Need some headphones now which of these should I buy. Also if you have any other suggestions around this price, but really like these headphones so would like it if you could tell me about the ones I mentioned. They both get amazing reviews for build and sound quality, but which one has that little but extra to give.

One more thing I should mention I am in Education going on to study music technology so which would work better in a studio, but also what would be better for listening to music almost constantly, I listen to Dub-step, rock, alternative rock, Drum and Bass, House, Punk, and more so I need the best headphones with great mids-highs and also punchy lows.

Need to add, what do you think about the Crossfade LP, are they a contender, from what I have read they don't stand a chance with these two?