One of my favorite zoos is non-AZA (Wildlife World in Arizona). I don't particularly care if a zoo is AZA or not, I more care that the animals are reasonably well cared for and their exhibitory is decent or improving. My biggest reason for caring if a zoo is AZA or not is whether I get a reciprocal discount from my local zoo membership.
The AZA is really good at being the standard of whether a zoo will be "good" or not, in terms of exhibitory, financials, and education. It holds facilities to a high level. But that does not mean that there are not decent places outside of the AZA. There are a number of reasons that facilities choose to avoid AZA membership, often they do private sales. Places like Iguanaland and Sylvan Heights are at the top of their respective categories with exhibits and species list that are better than nearly any AZA zoo.
However, the AZA has also seemed vindictive at times and will strip a zoo of accreditation if their financials are not in good order, which can remove otherwise good facilities.
The AZA is really good at being the standard of whether a zoo will be "good" or not, in terms of exhibitory, financials, and education. It holds facilities to a high level. But that does not mean that there are not decent places outside of the AZA. There are a number of reasons that facilities choose to avoid AZA membership, often they do private sales. Places like Iguanaland and Sylvan Heights are at the top of their respective categories with exhibits and species list that are better than nearly any AZA zoo.
However, the AZA has also seemed vindictive at times and will strip a zoo of accreditation if their financials are not in good order, which can remove otherwise good facilities.