This is pretty much bang on. I'm also quite treble sensitive so that 5K spike was the first thing to fix (I actually use oratory's fixed-EQ settings with just a touch less sub-bass) , but once that was done I could see why the HD800 are so well-regarded. Classical and Jazz are just sublime on them.

They're also some of the most comfortable headphones I've ever worn - they're just so damn ergonomic. Also, even though they're over 100g heavier than the HD6x0, they don't really feel like it due to how the weight is distributed.

The only downside, though, is that I often find that they are almost too resolving. So many albums in my collection are hard to listen to because the HD800 shine a spotlight on a bad recording like no-one's business. They're definitely a "serious listening" headphone for me. For that reason, I still generally default to my HD600 as my daily driver, simply because they do a pretty decent job with everything you throw at them and they're so great for casual listening.