I would say generally southeastern countries, Eastern European countries, Northeastern European countries have a stronger genetic purity. This ironically has a large part to do with their countries and nations as a whole being weaken on average than western European countries. Western Europeans attract more immigrants because their governments can afford it. I don't know the socio-political nature of Europe as a whole but I do know there are less inter-racial marriages in Poland than in Germany. If you mean who has the better genes in terms of overall success I suppose I would have no other option but to say the Germanic countries like England and Germany have the best genes. Its tough to put into perspective though if I understood your question in this way because each population has its good and bad apples it just seems some countries just harbor more advanced and progressive mindsets as a whole and this probably has to do with better leaders and more efficient and productive social standards and norms.
This thread doesn't make any sense.