I wrote an article on LinkedIn about our experience with using AEM Edge Delivery Services. Do these still hold true? I think they do. I also might add a 6th consideration, which is DA Live (Document Authoring, fka Dark Alley).
Link to the article: https://www.linkedin.com/pulse/aem-edge-delivery-services-consider-5-things-raf-winterpacht-t6t2c/