#5 stands out for me the most. Both for it's composition and color. It seems to hold more natural color tones over the others. The others, with the exception of #8 and maybe #4, all seem to have some type of cross processing. HDR's maybe?
#5 might have a touch of the same processing, if there is any, but it holds the entire tonal range better. And the composition in that one tends to pull the eye almost in a circle around the open area in the center. That's good for viewing the whole image :thumbup: