Iv bought some clarks 10-13x...totally fantastic..not only do they take virtually all the engine noise away they make atc and intercom clearer,,,if i would wait till the pfa rally at cranfield or some other light aviation airshow were you will find everyone trying to sell headsets at airshow prices...I paid 545usd at sun and fun for mine...and as im starting to instruct now reckon i wouldnt be without them...a friend of mine has the pilot 79s...but the battery keeps running out so no good if your instructing and not able to charge them..I love the clarkys...you will never wat any other headset whatever make you buy after you try anr...cheers