What is the preferred Bash shebang?

Is there any Bash shebang objectively better than the others for most uses?

• #!/usr/bin/env bash
• #!/bin/bash
• #!/bin/sh
• #!/bin/sh -
• etc

I vaguely recall a long time ago hearing that adding a dash to the end prevents someone passing a command to your script, but can’t find any details on that.

You should use #!/usr/bin/env bash for portability: different *nixes put bash in different places, and using /usr/bin/env is a workaround to run the first bash found on the PATH. And sh is not bash.