All gave sound advice that will be pointless to repeat. Second hand sets are just as good and I think that the headsets from ‘The Warehouse’ are very good I know them. If you want to have ANR set you can opt for one of the following. Buy a new set for near £300 pounds or upgrade you existing PNR to ANR by installing the ANR kit. I have done the later. The drawback is that the sound has a slight digital effect but still it is a good solution.