Humans all the way! Flush those toasters out the airlock and see if they 'splode. If they do, send a message to the Cylons criticizing their "poor design choice."
If one of my creations came back, busted up my home, and tried to commit genocide on my race, you can bet that any compassion I might have had for them would go right out the window. They could try to be more human, but I'd try to be more machine. A cold, calculating, killing machine.