I know you asked about Zulu vs Bose.
I tried both and went for a pair of DC13.4x which I love. After 10 years of instructing i'm sure they have saved me some significant hearing loss.Never tried them for 12 hours though. And they are robust. I've stuffed them into my flight bag every day without a protective outer shell and they still work, I don't think candidates 1 and 2 would suffer such punishment.
You also owe it to yourself to try the cannular option which seems to be the technophiles choice these days.