
So I've had the Bose QuietComfort Ultra Headphones Gen 2 and the Sony WH-1000XM6 for about half a year. I've thoroughly put both through their paces, and they've each taken a turn as my primary pair of headphones.
I started off preferring the noise canceling of the Bose headphones — it really does block everything. But time makes fools of us all (or so I'm told), and the 1000XM6 have slowly crept their way into my heart. So much so that I'd say they're my pick of the two — if you're looking for buying advice, that's about as good as you're going to get.