Randy Myers
100+ Head-Fier
Pretty cool about the Diana, I'll have to check into those. I just purchased the HD800s and they sound fantastic. What do you like better about the Diana? I'm listening to Huey Lewis (rock) right now on the HD800s, but I've listened to some Jazz with them too and it's fun. Stuff like Mike Stern, Miles Davis, Kenny Burrell ect.
The Sennheiser are very nice headphones. Compared to the Abyss they are definitely on the brighter side, but not as bad as their non-S model. Fairly comfortable, but not narrowly as much as the Diana Phi's. The Abyss have much more and much tighter low-end, much better instrument separation and more air and detailed with all instruments. Female vocals are to die for. They can also be used with my portable player (Astell&Kern) which I never would carry the HD800S to use with. The Sennheiser are bulkier, believe it or not.
On the down side is price. The Abyss are about double the price of the Sennheiser. If you can afford that much for cans then you would have a very hard time beating the Abyss. Oh, they are also hand made in the US (Buffalo, New York actually).
I listen to a variety of music. The Diana's seem to do very well with whatever I throw at them.