Hi guys, I am going travelling soon, lots of plane time to endure. I am looking for a decent pair of headphones with sufficient noise isolation; my budget is £50 - £80. Currently I have a pair of Beyerdynamic DT770 Pros - I like the sound of them, could do with a slightly more powerful bass and mids and a more compact fit. Any recommendations (supported by experience if possible!) would be appreciated. I am open minded brand wise! Thanks.