I have a male American field golden retriever. Thinner, less hair but still beautiful. Canadians are heavier and Europeans have lush thick coats. Most American breeders have beat the gene pool to death and now the breed has higher cancer rates then the European breeds. Other then that, the all have the same lovable, intelligent and affectionate behavior traits. You will pay a premium price for a good bloodline.
Hope that helps you some.