I like the third one the best. To me it is interesting and something different. Not the same old type of silhouette shot.
It works. why take the normal type of shots. That is what makes photography fun. It is easy to get a silhouette shot, But not silhouette and shadow combo that is interesting.
But maybe this just the way I look at things. I don't want to shoot the same thing that everyone else shoots or frame things so they fall in the center of the picture. Shots like that may turn out great but to me are a little boring..