Bose QC 35 headphones are considered by many as market leaders. The provide excellent comfort and effective noise cancelling. The noise cancelling excels with continuous noises, such as engines. Making frequent travellers an ideal target market. The constant drone of an engine is fatiguing. Use of noise cancelling headphones, you are able to arrive more refreshed. The good My last flight was on a 2 prop to Tassie. The headphones did not cancel out the noise completely.