Everyone around the world knows about the US-tops... (one of the advantages of being "leading" in most fields is that you are known by other people...) I would like to know what is the difference between the usual university rankings and the "Ivy's" and things like that. Also I would like to know what are the advantages of getting in the top schools... sounds silly and I imagine everyone thinks that a top PhD means being better paid after that but, what does it really mean working let's say in a top 10 university? There are so many rankings flying around (Times, Webometrics, shanghai etc.) and then there are the "leagues" and other things... Of course, I am searching for a specific research area but I was thinking: if I have the chance to go at a "very top" school would it be advisable to start thinking at leaving my research subject and start something else? I think this is just a sort of pre-GRE philosophy disorder
