Hi, please help me choose a vectorDB given my requirements:

I am currently pre production, running on pinecone. Pinecone is fine, but going into production, I will have ~20k documents, and I think Pinecone will be too expensive.

I want a solution I can run with Azure, as I have some credits. I am trying to choose between hosting pgvector and Azure AI search. What should I look for before making the switch?