To me it just seems like an old overpriced case, what makes it so good?
Everyone does not like it. In fact basically no one does anymore. Like you said it is a old overpriced case. There is nothing good about it and this is coming from someone who owned one. It was a good budget case at the time but it is now 6 years old and hasn't aged well. I physically cringe in pure disgust every time I see someone in CAPL use one that costs ~$60.
It is not the case that everybody still likes this case over other offerings at this time.