Of those, I'd say maybe the Grados or the HD600. With all the symphonic stuff they do, I may give the nod to the Senns. Also, the female vocals really shine with them, but I have the 650's. They are so revealing though, that even though their albums are well recorded, you can readily discern the studio work. For example, on Dark Passion Play, it's easy to notice the overdubbing - the full symphony sounds great, but the vocals and guitars and drums all have that "recorded in a studio" sound. It's not a bad thing, but it's just part of the revealing nature of the Senns.
EDIT: Espire's hit it exactly on the head...that's exactly what the Senns do so well for this type of music, and because they (Nightwish) are so diverse, you'll really have a hard time pinning down a phone that works for all aspects.