It depends on what you want them for. The 'active' noise cancelling only works well on continual noise, rather than
If you're listening to music, some well fitting over the ear phones will be as good as it gets for that sort of requirement.
If you need less high quality reproduction, but really need to cut down external noise, look at any of the Peltor range. Their products really are the best at keeping unwanted HF sound out.
As used by airline pilots, F1 pit crews, TV crews etc......