I really like #2.
#1- Subject is center, composition could've been more interesting.
#2- I like the composition, the color and the silhouette. The more I look, the more I like.
#3- Not interesting. Lacks a clear subject and the background is busy. The narrow DOF among the silhouetted flowers bugs me for some reason. Some are sharp and others are not.
#4- Background is busy.
#5- I like the 2 tree subject but unfortunately the neighboring tree to viewer's right encroaches on the scene and you had to cut off the left side of the subject. Looks like you were limited by the scene. Sometimes the shot just isn't there.