I use a Bose X, it is awesome but I am only busting around in the one Machine. It's a low imp S76.
The 412 & 212 are completely random even within the same company, as are 206s etc.
If there is any chance of flying more than one machine I would be tempted to get a very good but not quite as awesome DC ANR with dual impedance. Then you can strut around with a carefree attitude and one headset flying watever you like. No addition mic leads to stuff around with.
On the other hand, if you are cashed up the additional mic for the Bose is another $700 AUD on top of the $1450 you paid for the headset. Then you can fly anything and look super cool.
Remember, it's all about looking good, that's why chicks dig pilots.
