Size does matter, have to be bigger than my husband, and honestly that isn't difficult. lol I prefer a thick cock, it feels so good stretching me. Like others have said though, it depends on how the guy uses what he is blessed with. I have had two Black men who have the same size cock, one can make me cum in no time and keep me cumming. The other one, has to work at it to make me cum. The difference, one knows how to use what he has been given. The other hasn't learned that technique yet. Give me a nice size Black cock any day, but don't get me wrong I won't turn down a well hung Black man either.