It's not a matter of country, but which school is producing the highest caliber, most innovative architects? Also, what's the market for architects in your own country? Which schools' graduates are architectural firms in your country recruiting & hiring from? You are going to have to qualify as an architect in your own country. Architects are a glut on most markets, and you will only work in your country - IF you can find work at all. You must ensure employers in your country respect the school & its graduates. And then, of course, be a top grad of a top-rated program to have much chance of any entry-level job.