I love Julia, even though that has been a more recent development for me! It was neither here nor there for me before, but I have come to like it alot since a friend named her daughter Julia (she's 6 now).
I think its a classic and probably will stay where it is. When I did start to like it I thought it interesting that it had not become more popular than it did since Julia Roberts rise to fame.
I see Juliet as the more likely name to rise in a trend.