The Bose X is the gold standard. I use the Bose QC 2 along with the mic adapter from uflymike.com in the Metroliner. The Anr isn't as good as the X, but it's a lot cheaper. I find it's quiet enough for the Metro 3, but when flying the Metro 2 I use earplugs under the headset, since the prop speed is 300 RPM higher. Not bad for short legs; if you're flying 2+ hours at a time, it might get annoying. Overall, I really like the headset; very light, comfortable and durable.