I went with the University of South Dakota. It's very random. I liked that it was AACSB accredited since that's the same accreditation of fancy schools like Harvard. It seemed legit that it was a state school.
Most importantly, it's the cheapest online AACSB school. (Or, at least it was a few years ago).
My experience was good. Most people were from the midwest and very nice. The courses were challenging, but not overwhelming. There was a focus on corporate social responsibility, even in finance-type classes.