Nice shots Loz! I think the chimp is the one with real potential, but it's suffering badly from the drop in quality due to resizing. The eyes really need bringing out a bit as they are the focal point of the shot.
Try cropping in really tight on the chimp for what could be a very imposing study. Experiment with different crops to see which works best. I can't help thinking you're losing a lot of detail which is probably there in the original.
