I think it is more important which university you are studying rather than where are u studying. I would rather study in tokyo univeristy ( great university) any than a very poor university in USA. Bottom line is its down to ranking of individual university where they u are studying rahter than british and american. Some of the australian universities are pretty high in ranking as well. I would easily leave my current university for studying in university of sidney although i am studying at one of the top universtity in UK but it still is less than university of sidney.