Oh really? 
P93, huh? I’ll have to try that.
Personally, I see P74 and EST as being pretty different. But I also agree that both pheros do increase social acceptance and positivity. When Inkling says P74 is more laid back–totally agree there. Whereas EST is more hearts and flowers and luurve.
Come to think of it, wondering how much EST is in MX135?..seems like maybe it has a good slathering of EST in there.