The last one does not rock my world, the desat skin gives me chills..

Maybe a BW conversion instead? The first two are nice with my preference for teh second one on composition merits, a bit less on the desat on that one might also help?
I do like the pose in the first, the direction the body is facing and the position of the face - particularly to show off that LH cheek - is quite well done in my eyes..
