Reply to Help choosing headphones and novation nocturn

I never tested out dj headphones and was wondering how much of a difference would a cheap 60$ headphones compare to a 200$ one. How important is quality of the headphones?

Also I was wondering if anybody knew much about the novation nocturn and if its worth paying a Benjamen for it. I was comparing that to buying an ipad with an app similar to that.

Any advice soon would be much appreciated!