@chud2 To answer your question about the Oticon technology, they are calling it Deep Neural Networking. It sounds impressive but from what I heard from an audiologists panel discussion that was conducted via Zoom, it's just hype. It does not work as well as their salesmen want everyone to believe. Try it though. Let us know your experience.
Regarding the Costco products, yes, some features are not available as you would get from the original manufacturer. I don't remember the features that are not available but if you can live without them, then its a great way to save money. If you go to Costco, ask about the features that are not included. Hopefully, they'll be able to tell you.
Tony in Michigan