For air travel The Bose are fine, all of the noise canceling head phones are ideal at canceling out a specific frequency, like the continuous frequency of a jet engine. Michael, the Bose are REALLY comfortable...
However, for my application.. In an office, noise canceling head phones are not great, this is due to the fact that they are not good at rapid frequency chances, like random people talking ect, ect. I just wasn't a big fan of how they sounded... One of those preference things i guess...
I would say buy a pair of those Bose from a company with a good return policy, and try them... You may like them, i thought that they were "ok", but i wanted more performance if possible, due to my specific situation.
I found this site, they have several reviews. Buying headphones turned out to be a bit more of an undertaking than i thought... i should have figured as much though, considering it's an audio product...
http://www.innerfidelity.com/
