Black just doesn't work for me, I've had 10 black guys and only one was rock hard 10x6, the rest could not get it hard, some semi hard, but it wasn't the firmness I like. Maybe I have had some bad luck. I tend to love the white and latino dicks.
that makes no sense... its not like a black persons blood circulation is different from a latinos or white persons.
i think it more has to do with the guys you found.