I think you'll find that an 'airline type' headset isn't going to give you enough hearing protection. Don't forget that the GA ANR headsets achieve their damping by a combination of passive and active noise reduction. I also doubt that the ANR in a headset that's been conceived for the cockpit of an airliner works on the same frequencies as one that's made for GA. Simply put, a prop and piston engine produce a different kind of noise to the wind rushing along a pointy nose.
To cut a long story short - buy a Bose-X, best investment you'll ever make
