Well, the quality of exhibits at Bronx is amazing. They are home to perhaps the greatest exhibit of all time, CGF. Every exhibit they open is one of the best of its kind. Tiger Mountain, opened in 2003, is perhaps the best tiger exhibit in America. The Madagascar house is also very highly regarded. The Himalayan Highlands exhibit is said to be the nations best display of snow leopards, according to both authors of ABZ. The Baboon Reserve is one of the best baboon exhibits and all the other savanna habitats are above average. I also like that WCS has started projects for their smaller institutions. The new Snow Leopard exhibit at Central Park is brilliant, and I am sure the jaguar exhibit at Queens will also be brilliant, as there really haven't been any disappointing enclosures built by WCS.
It would almost be unheard of to see an enclosure like EO built at Bronx. Not saying EO is a bad exhibit at all, its pretty good, but it lacks attention to detail, which is really important in creating naturalistic enclosures. I think San Diego is second best, but the problem is it truly lacks an outstanding brilliant exhibit like CGF. No doubt many of the exhibits are great, but none are as brilliant as Bronx's.
One thing I see in San Diego is they are becoming more and more like a theme-park, especially how they changed all the names of their exhibits. "Lost Forest" and "Easy Street" sound like something out of Universal Studios, not one of the nations greatest zoos.
I find it a little disappointing that Bronx has decided to phase their elephants out, as there enclosure is really decent being 2 acres and somewhat resembling an Asian Forest clearing. A plus to Wild Asia though is their Indian Rhino breeding program. They probably have the second best breeding program in a US zoo after SDWAP.