Bose
However good the Bose might be it's ridiculously over priced. Nearly £4000 to equip an average four seat aircraft, for no, or only marginally better noise attenuation than the other very good headsets on the market. OK if you turn up at the airfield in your brand new Ferrari and jump into a new TB850, but for the rest of us? My advice is buy any of the reasonably priced sets and spend the change on flying.