However, this triptych speaks about the search and the final photo was quite successful.

As I just asked the author - which criteria did you use for this?
I can feel some differences between the pictures, and I would say the third one is the most decorative one. But it seems not yet convincing to me this photo to regard as the most "abstract" one.

By the way, the photos all three together be taken as one work (triptych) seems me to be a very good idea and approach!