one thing i forgot to mention i did was the clarify filter. i think that's what you're looking for. it handles contrasting nicely without reddening or raising the luminance like a brighness/contrast layer can do at times. i think bart hickman knows what the photoshop equivalent is to that filter. i use psp 10.
and like you, i could have put more time in on the clothing also, especially the woman's. i think that dress has a nice pattern to it, but there's so much dirt on the image that it's hard to bring it out and clean it without ruining the pattern.
i'm also interested in arknsawer's attempts on these images. she's posted a few now but i dont see attempts by her posted.