There are too many factors in this. It depends on your economic status (if money is not an issue you should definitely go to the best), your career goals (if you want to do management consulting the you need to go to certain schools), family (I know people who gave up a better school because they want to stay closer to their spouse) and the economy (in a great economy even the 16-30 ranked schools can get into Investment Banking... in this economy is nearly impossible).