I mostly listen to rock albums from the '90s forward, with preferences toward live albums and anything well-recorded using acoustic instruments, and also a very large quantity of the official live releases of Phish's current and recent tours. Some of my go-to tests for headphone quality and enjoyment:
- Phish. Lots of Phish. Occasional other jam bands: Yonder Mountain String Band, Moe, String Cheese Incident, all primarily their live shows.
- All of The Avett Brothers' studio albums, especially Emotionalism (which is far too hot on the treble, and the only high-end headphone I've found that makes it tolerable is the HE-6) and the properly-mastered Second Gleam and The Carpenter
- Joe Pug's Messenger
- Counting Crows' Saturday Nights And Sunday Mornings and all of their live albums
- The Milk Carton Kids' Live From Lincoln Theatre video
- Alice In Chains' MTV Unplugged (which I'd say is better than Nirvana's in both sound quality and content, despite Nirvana being the better overall band)
- Some great classic rock and folk like The Last Waltz, Joni Mitchell's Blue, Simon and Garfunkel, and Neil Young Live at Massey Hall 1971 (amazing)
- Some occasional Mumford & Sons or Decemberists
- Plus a bunch of '90s–present rock bands like Foo Fighters, Eve 6, Crash Test Dummies, Social Distortion, Stroke 9, SR-71, Meat Puppets, etc., much of which sounds awful on most flagship headphones
In other words: what most people would consider an absolutely horrible, out of touch, and mostly outdated music collection. But I love it.
My main complaint with the HD 800 is that its overall technical excellence comes at the cost of personality. I thought I wanted neutrality for years... until I got it. It's a great headphone at achieving technical perfection of a style that, as it turns out, I don't really care for: smoothness, with a mostly laid-back sound signature, light bass, and relatively little excitement. You're left with little to complain about, but nothing stands out. And it lacks the treble finesse and fast decay usually found in orthos and stats to provide a "wow!" level of detail.
But even the
article you referred to is relatively out of date: since then, I rented and then bought an HE-6, renting it with the EF-6 amp (which was great) and then buying a used Schiit Mjolnir from here (which is almost as good as the EF-6 at powering the HE-6) to tide me over until the Ragnarok is widely available. I believe the HE-6 is the better-sounding headphone on nearly all fronts, and it brings
excitement and
energy to the music without significant technical flaws or tonal imbalances. (It also made me realize how nice a good midrange is, and how recessed the midrange often is in other headphones.)
The HD 800 beats the HE-6 in soundstage, comfort, and amp-friendliness, but I greatly prefer the HE-6's sound. (And it's not
uncomfortable on me, just heavier.) But if you're looking for a great overall-setup value in a flagship headphone, I don't think you can look at any of the orthos, and especially not the HE-6, because of their amp needs. You can drive the HD 800 well enough from amps that cost less than $300, while I think the $750 Mjolnir is the cheapest amp that can drive the HE-6 respectably. So, all in, you can get a great HD 800 setup for about $1800+DAC, whereas you're looking at $2100+DAC minimum for the HE-6.
(Of course, if you're looking to maximize value near the high end, you're probably better off skipping both and taking a good look at an HE-560 setup.)