Rhino for me, Black Rhino to be particular. Got to see the Black Rhino orphaned calves in rearing, and how slow they breed and so forth, love the majestic guys and just happy to see them browsing. They have next to no natural predators at maturity (yes, lions could take one down potentially, but speaking in generality), so I'm not interested in predating upon them. Kind of a rule of thumb of mine, if it's prey for anything, it's prey for myself as well, same goes for animals overpopulated, or overly destructive in their habitat, and in my books the Rhino is neither.
Same thoughts on Cheetah, I'm all for the sustainable, well managed hunts of any species suitable so don't take my answers as being against hunting Rhino or Cheetah, it's just not for me personally.