I think the Utopia sound better than the HD820 too. They definitely handle stage and imaging differently ... as the Utopia has almost NO stage compared to the HD820. Not that it's a remotely apples-to-apples comparison. There's a $1,600 price difference and they're two different types of headphones. If you need some degree of noise isolation, inward or outward, then one being "better" than he other is immaterial, as only one of them is even a candidate in the first place. And if you don't, then why even consider a closed back (absent only being able to have one headphone, maybe)? Utopia remain my favorite open-backed dynamic headphone, and overall favorite headphone period. The HD820 are just the best closed-back headphone I've heard properly ... meaning at length and with gear and music I know inside out and in a sensible environment. Not perfect, just the best closed-back I've heard. I still think it's very interesting that I haven't seen a negative review of the HD820 that has any photographic provenance that isn't also show/meet conditions, and probable pre-production hardware. Given how vocal and aggressive some of the negative comments are regarding them that's especially surprising. That many of those comparisons are to totally different types of headphones just further devalues them in my personal opinion. BUT ... what I think shouldn't matter; take a listen and buy based on what you like and what you need. Which still, to me, means don't buy closed-back headphones if you can use open-backed ones instead.