I've been using Roon for the last month, so have been using Oratory's EQ since I can plug it straight into Roon (that's such a great feature!) over Sonarworks. I think I actually like his EQ better. Not sure what magic he has done, it just sounds more enjoyable on these headphones. From some listening tests (done via Spotify and volume matching APO/Sonarworks pregain), it sounds like the low end is more emphasized/fuller on Oratory which is probably why it sounds so great to me. But the EQ curves don't show that, in fact Sonarworks looks much more bass heavy. I feel like there is something odd going on with the Sonarworks filters - I know they do some sort of low end filtering specifically on HD800s to prevent distortion, so that might be it. So maybe it's more accurate, but Oratory's EQ sounds really great for just listening to music.