well I am not so into Epica, because I know stonger vocalists in compare with Simone. Not that she isn't good enough, but in the Netherlands we have some interesting bands coming up like Revamp, Autumn and Stream of Passion. Those 3 frontwomen are more diverse, although I like the last Epica album a lot.
Nightwish nowadays isn't touching me. Ok good songs, well produced and the men have a lot of talent.. but Anette is not awaking any emotions when she sings. I think music is about that, especially vocals. Shame so, I have to find a new replacement ;-)