These days I prefer caucasian women (I'm white myself), though I am very partial to asian women and mediteranian women and middle eastern women (particularly Persians).
Touching on a topic earlier on in the thread, out of all the countries I have been too these had the hottest women:
Colombia: probably your more typical Latina. Brown skin, big arse, dark hair. Stacks of hot women here. Although there is alot of plastic surgery (both of the tits and the arse). I would say Medellin in Colombia is a city filled with ridiculously good looking women. Its up there with Cordoba, Argentina.
Argentina: probably has the hottest women in all of Latin America (though I didn't make it Brazil). There is alot more variation here than Colombia; alot more blondes, and girls with light skin, even red heads. I guess there was alot more variation in immigration initially. The women are very flirty and approachable too. Like Colombian women.
The United States: Probably has the same level of beautiful women as Australia does. I was particularly a fan of women from the deep south. Alabama had a lot of pretty girls and the accent is really hot.
Thailand: Bangkok has alot of good looking women. Thai women are pretty open sexually and love white men, so its a good place to go if you're white and like Asian women.
Vietnam: similiar to Thailand but the women are lighter skinned. The girls probably aren't as open sexually as Thai women though.