Hireandhire - you obviously haven't tried a decent headset, and you must have bionic ears which will never degrade through long term noise exposure
It's true the Bose X (aircraft powered version) has flimsy plugs. They are made by LEMO who make a huge range of connectors; I use them in products I design. Some plastic, most metal. The very specific plug that Bose use is part of a standard LEMO range (with varying pin numbers available) but the plug with that exact number of pins is not available from anywhere I've looked. I wonder if Bose did a deal with LEMO to not sell that plug to anybody else... anyway, it should have been a metal version. Other than the plug, the Bose can't be faulted. However - we are talking about the aircraft powered version here, most Bose X users will have the standard twin jack version which doesn't have this problem.