I have both sets of headsets. The Bose was bought for me by my wife as a birthday present just after I passed my PPL, the Zulu was given to me by my brother-in-law when he failed his medical and was unable to fly anymore.
If I was just buying one for myself then it would have to be the Zulu for me.
Headsets do cost a lot of money and it is true that if you divide that by the number of hours it equates to a small amount. But even so, I do think that both are not really worth the price tag charged. They are good and probably at the high end of the best, but over £900 for a headset for what they are is overpriced. But that's the choice you have.
Having said all that, any headset is a very personal choice and what one person might find comfortable might be very uncomfortable for someone else.