Ok that's the problem: I don't intend to use tubes. I have never tried tubes, but in my limited knowledge, using a revealing pair of headphones with an amp that creates loads of distortion wouldn't work that well. I would use tubes with something like the HD650. I intend to build NwAvGuy's O2 amp and use whatever pair I get with that, since it's supposed to be a budget wire-with-gain.
Thank you Nikp, I really needed someone who owned both to pitch in. I really want detailed headphones, however I don't want "lots of detail" to turn out to just be "bright", as Macedonian mentioned. I know I might have to give in just settle for something in between, but I am looking for a detailed neutral headphone*. I don't intend to use them with bass-heavy music, and if I do I'll EQ a bit, but I don't want them to be bright either.
*and now you all say "and I want to marry Natalie Portman"