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Do NOT try the Lightspeed Mach 1 in-the-ear headset. It's an extremely flawed headset. The earplugs don't seal very well, the ear clip on the mic-boom side is very insecure and doesn't hold the boom very securely, and the boom doesn't stay bent. The microphone is pathetic, and if you've got a vent open and there's any breeze in the cabin, the mic will pick it up. The wires are thin, like the ones on an ipod headset, and it gets tangled very easily. I bought one for my own use, but since I bought my avcomm the Lightspeed is only used by my passengers now. Before I bought my own headset, I used whatever cheap headset the airport had available, mostly Avcomms. I bought an Avcomm AC454 for $175 dollars. I fly light sport aircraft, which aren't very loud, so PNR is just fine. The ear seals and head pad are comfortable, the size and mechanical pressures are comfortable, and I like the old fashioned wire mic boom better than the bendy straw type. I tend to use my headset with both ...