[Lord of Nukes]

If you know you're going to be rushed by someone, a Sunken could be useful. Have it by your workers otherwise he'll run right past the Sunken. Scout first though, that way you know if you'd actually have time to complete a Sunken Colony before he reached you. If you went with Zerglings, you should have an advantage because the time when his Zerlings are coming to you, you should eba ble to rpoduce more than him, and you are able to build more Zerglings where the Zergling battle takes place. You could use workers, but Zerglings really own Drones.