I own a pair of lightspeed 25xl's, they are really quiet and comfortable. The only downside is that they are a little heavy compaired to others, 15oz. I had a couple of long days in the cockpit about a month ago, my neck was sore when i got back. Don't know if that is because I wasn't used to that much flying at one time or because of the weight. I have tried the Bose on a couple of flights, they seem a good bit quieter than my lightspeeds. I was flying a lance, I thought something was wrong with the engine, it didn't have the right tone. I haven't tried anything else. One last thing, battery life is pretty bad on the bose, about 10 hrs. is all my friend gets. I get about 25-30 hrs. and when they do go dead you can still hear the controllers ok.