Re: What do you think of these potential twin sets?
My favourites are:
Joel & Harrison, Jane & Julian, and hmm... I don't really like any of the girl ones. I guess I'd pick Serena & Diana but I don't like either same. If I could mix & match, I'd like Fiona & Seraphina (pretty different in styles, but I love both names so I don't really care about the styles so much) or Fiona & Serena (for style).
I LOVE Ephraim, btw! Ephraim & Jane is really stunning to me.