Top 3, you are referring to ANU, Sydney, Melbourne. Melbourne has the highest entry requirement out of the three. It is a hot spot for poly student to upgrade themselves. if u can get gpa 3.0, u can get into most of its courses. i think you have to get minimum 3.5 to even get into NUS fass. Naturally, given its low entry requirements, most people will not have a good impression of melbourne.