If you are choosing a backend for a project, and you think there's a chance that your use case could require spatial querying: use postgres, so that if the need

If you are choosing a backend for a project, and you think there's a chance that your use case could require spatial querying: use postgres, so that if the need arises, you can enable postgis. You will get all of the features described here natively, with support for indexing and other improvements as well.