I have always liked
June. It's kind of old-ladyish, but that's part of its charm. I actually know a little girl named
June (they call her Junie sometimes) who was named after her great-grandmother and it made me like it even more.
I've always liked
Juno as well, but the movie kind of wrecked it (not that it was a bad movie, it's just that now that's all anyone can think of when they hear the name).
As a child of the 70s, I've known a couple of Junipers, and the name doesn't really age well I don't think.