Everyone has given you excellent answers around accessing blobs directly. However, if you need to list blobs in a container, you will likely see better performance with the many-container model. I just talked with a company who’s been storing a massive number of blobs in a single container. They frequently list the objects in the container and then perform actions against a subset of those blobs. They’re seeing a performance hit, as the time to retrieve a full listing has been growing.
This might not apply to your scenario, but it’s something to consider…