Last week we took a trip down to Winston Oregon and drove through the Wildlife Safari. It's a beautiful place. Wide open spaces for the herbivores to roam and mingle, and the carnivores in their separate enclosures have it pretty good as well; they apparently have one of the best cheetah breeding programs in North America. And they're accredited by the Association of Zoos and Aquariums.
All of this is to say that I don't mind giving them my money. :)
It was especially interesting to see the herd of elk. The zoo is situated on several hundred acres of oak savanna right in the middle of wild elk habitat. They looked right at home.