I don't know anything about Androfactory first hand , but many here have chimed in about them so look it up.
Back to business:
4-AD converts to testosterone
Stano is popular because it helps fight lethargy and also bloating but is not a test base...
In reality the only real test base is TEST , if you can;t pin I would say 4-AD and/or Stano with Dermacrine (Transdermal DHEA)