Well Mary,I've had a black lover for 6 years with husbands permission. He is quite hung at around 10 inches and real thick.
That being said I will add the following:
It probably doesn't have to be a hung black man.
However, the tabooness as mentioned, the contrast is beautiful,there attention they give you and the stamina is incredible. I do think they are equally turned on by having a white woman,especially if she happens to be married as i know mine gets so excited with my husband watching and he stopped using condoms a LONG time ago much to my husband dismay. He ALWAYS lets him know as he is cumming inside me and then he will slowly pull out so my husband sees his "seed" as he puts it. The first time it happened,he had started with a condom as usual but had slipped it off and my husband was a little upset when he realized it,but has since got over it.
To sum it up, try it, it is an incredible feeling,i don't think u will want to do without any more as he will reach places never explored before.
Wanda