All depends on the individual, girls can be lazy regardless of where they are from.
I agree with SeekingtheTruth.
I've had girls from the same country and same race who have been polar opposites. That being said so far in my punting I've tended to find the general trend (for me at least) is that:
British girls are my favourite to punt with (in my head) but don't give amazing service although the conversation flows better.
Asian girls tend to offer more services but are mechanical as hell! This being said a lot tend to offer the world and don't then deliver, but when they do deliver they offer the most
Eastern European girls (to me) mostly seem to be purely in it for the money and don't have passion.
Finally I've had two Indian girls and they were both let downs. I fell for their exotic beauty and got suckered into lacklustre service for a rip-off price.
But like I said before it depends on the girl, because my favourite two punts ever have been with Eastern European girls that have not been passion-less and offered good services.
Never had a Black girl. Not a racial thing (and sorry if my next comment offends anyone) but I tend to find that Black girls are either insanely hot or very unattractive, not much middle ground and I am waiting to find a Black girl who I find insanely hot and good value before I go to one.
Never had an Aussie or American either but there are a couple floating about I've been tempted by