In terms of general looks it would be white people. However I get all hot and bothered by some black ones, especially those that are well-endowed.
When a pussy or cock is at my tongue it is impossible to determine nationality. Just lick or suck. It is all good.
I like my women to be Asian or Hispanic. My men to be white or maybe Asian if he is effeminate. I am white.
Doesn't matter to me what color they are after all I'm some what dark since I'm Mexican but what matter's is how they use their tool when in me rather it be in my ass or in my mouth!