As far as composition, they both balance the eye well, "grove" in particular.
However, make them both black and white and you could probably charge more. I think removing all color from "grove" would give it more character...you know, really enhance the stark contrast between tall/short, belonging/intruding. The color makes it too "happy" when you've named the piece "interupted," suggesting a break from conformity.
I really like the the light/dark/shadow aspect of "claw", and I think it also would stand out more by amplifying that opposition or contrast. The brutal aspect of an industrial object, somewhat softened by it obsolescence.
Just my 2 cents.