Been using Bose headsets for nearly 6 years now and I am on my second pair.
I really like them and I certainly think they are good. An old colleague tried mine one day and he was hooked as well. I have used them on piston singles, turboprops and now on the BAe 146.
The good things I like are that they generate less white noise on the intercom on the old BAe 146 and the audio quality of the PA is far superior to any other headset.