Hmmm. Too much contrast I think. On image 1 & 2 anyways:P
I can't remember who I read it from (Bertrand or Peter maybe?). But a good rule of thumb that I've taken to heart when it comes to post production is to get your adjustments to a point where you think it looks good; then reduce the effect of your adjustment effects by half from there.
Good contrast in an image doesn't necessarily mean crushing all your dark tones. It becomes way too distracting.