I tried out milvus. Developer Experience is crap. Documentation lacks some major core concepts. I've been experimenting with it for hours. Eventually I turned my back and said: Why not use pg_vector and scale the fuck out of the cluster? That should bring.. equal performance, as the pg_vector implementation is written in c and the comparing algorithms wouldn't differ too much from milvus.
Just took a look at your docs and product page as well. Keep up the great work!