Ironically, I've had the same problem with the lightspeeds. They work great at lower noise levels, but at extreme levels, they can't keep up. I haven't had that problem with the Bose.
The condition of the earseals makes a big difference on the Bose, and on the Lightspeed. A worn seal can cause all kinds of problems with the headset.
The Lightspeed is the only headset I've had come apart on me while simply flying from A to B. While climbing out on departure, I had a lightspeed headset fall apart. the earcup failed and it fell in two pieces on the floor. To Lightspeed's credit, I overnighted it to them and the headset came back the next day overnighted, fully refurbished with all new parts.
In the case of Bose, I visited their booth at the Sun n Fun airshow a few years ago, and mentioned that my Bose X developed a chirp or buzz in one ear, which I noticed at higher power settings or around loud noises. The company representative immediately said it was likely worn ear seals, and gave me a new pair on the spot (about forty dollars, new) at no charge. The earseals fixed the problem.
I have rough razor stubble on my cheek after a few hours, and the earseals that contact my face ahead of my ear tend to get torn up. It was this wear that caused the problem.