I
LOVE Euphemia, especially its nn,
Effie.
Eudora and
Euthalia are too old and unusual, respectively, for me.
Eudocia is...interesting, but I doubt I'd use it, and the nn's do nothing for me. I kinda like
Eudoxia, because it's historical. I always use the second pronunciation when I read the name. BTW, what do you think of
Eunice? It's an "Eu-" name that I've grown to like.