I've tried the Clarity Aloft, and the QT Halo in Cessnas, Pitts S2B, J3, and a Lancair. They're great for shorter hops but after about 2 hours my ears wanted to set the damn things on fire. I went on to buy the Bose A20 and sell both of the in-ear headsets. In the Pitts (which is a noisy SOB.)...