I agree. The natural Oscars is definately most attractive.
Personally I can`understand why mankind has to make all these variants of fish that looks so beautiful as it does. I guess it is because we can... Another stupic excample of what humans do to prove for themselves that they are "smarter" than nature... And then of course - we got something called money...
I feel sad when I see fish that has been breeded to make the fins longer, different bodyshapes, crossbreeding to produce new "species" like the blood parrots, flowerhorns etc.