When I go to a seafood restaurant, I don't order pasta. When I go to an italian restaurant, I don't order sushi.
When in Asia, I bang asian girls. Heck, when in Canada, I bang asian girls
Based on my (always biased) white guy eyes, the Russian girls I have seen in the DB and working saunas in Macau are very average to even poor examples, not at all exciting. They would be throwbacks in their home countries.
I have have a couple of rolls in the hay with black girls, and generally I don't find them physically attractive. I also have found that they generally have lousy attitudes about stuff. I rarely see a black girl that even catches my eye for more than a second.
I have had a couple of brown girls (indian, west indian, etc) that have been average to look at, but incredibly willing participants in the game. Good attitude goes a long way to making me a happy man.
With such a wonderful resource of asian hotties coming in and out of HK, Macau, and of course the southern mainland, I cannot picture any great need to bang average to ugly white chicks.