Hi, this is probably the hardest to decide because there are so many differing options. But here's what I need help on. I've gotten offers from all three universities, three different countries, three different continents.
My field of study will be Computer Science, but that's of little to no relevance to my future prospects. My decision will be based on prestige. Job prospects, from where I'm from anyway, tend to lean on overall prestige.
1. Georgia Institute of Technology (USA)
2. University of St.Andrews (UK)
3. University of Melbourne (Australia)
Thing is, from where I'm from, employers aren't that knowledgeable about specific university strengths apart from the obvious MIT/Caltech. So, to give you a better idea, they're more likely to hire people from 'prestigious' universities, incredibly narrow minded.
Now, you could say that I should argue my choices on where I want to go based on department's prestige, teaching quality, etc. However, the reality is that (Again, only relevant to where I'm from), this decision is not just purely based on acceptance a job. More often than not, it defines the career ladder as well (e.g. The Oxbridge/Harvard/MIT/Caltech guy gets easier promotions than say, the guy from Emory*[No offense to those going to Emory, I'm just randomly selecting a uni from the 10-40 range]*)
I hope that clears things up and I don't want to leave an impression on people thinking I'm a rank whore. It's for my future job prospects. Let me stress again on the fact that the field of study don't matter because it will eventually lead to a managerial post (think Govt. agencies type, non-U.S).