Delphine is a favorite of mine. It's for me, one of those names that has been on my list for years and years and I swear it's only recently I'm seeing it all the time on this site. It used to get almost universal criticism. LOL. Oh well, it's still a crazy and weird name for non-namers so it's all good.
Seraphine is ok. It's sort of a pretentious version of
Sara imo though.
Josephine - I've always found frumpy and plain. I have no good explination for that.