I REALLY like #26. Great first entry. I'd like to see what it would look like if the green circle became a very subtle circular recycling symbol, with three arrows instead of a solid line. There are many different types of arrows/pointers- I don't know which would be the most subtle, but I don't want to detract from the rest of the image.
I'd also like to see your take on the tagline (see #25).
I quite like what you did with the arrows on #42, but I really want to avoid gradients. Also, I like the size of the image better in #26. I'm starting to think that the tagline is better separated from the logo.
The arrows look nice in #54. I noticed that the image is smaller, in proportion to the type, than in #26. I actually really like the size of the image, and the type, in #26. Also, I like the whipping point end of the leaf in #26 coming out of the circle- is there a reason you changed that in #54?