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FWIW, here is the 2009 USNWR ranking for graduate programs in applied math:</p>
<p>1 New York University New York, NY
2 Massachusetts Institute of Technology Cambridge, MA
3 California Institute of Technology Pasadena, CA
3 University of California–Los Angeles Los Angeles, CA
5 University of Minnesota–Twin Cities Minneapolis, MN
6 Brown University Providence, RI
7 Princeton University Princeton, NJ
7 University of California–Berkeley Berkeley, CA
9 Stanford University Stanford, CA
9 University of Texas–Austin Austin, TX
11 University of Michigan–Ann Arbor Ann Arbor, MI
12 Carnegie Mellon University Pittsburgh, PA
12 University of Maryland–College Park College Park, MD
14 Georgia Institute of Technology Atlanta, GA
15 Cornell University Ithaca, NY
16 University of Washington Seattle, WA
17 University of Chicago Chicago, IL
18 Rice University Houston, TX
19 Purdue University–West Lafayette West Lafayette, IN
19 University of Arizona Tucson, AZ
21 University of Wisconsin–Madison Madison, WI </p>
<p>All your choices will provide a great math education.
I would wait until acceptances come out, then look at cost, environment, and other factors to base your decision.</p>
<p>McGill, Berkeley, Chicago, and Brown are all fantastic in their own right and each have their own strengths and weaknesses. Berkeley and Chicago traditionally have slightly stronger math departments overall than Brown, with McGill further back. You’ll have much smaller average class sizes and more personal attention at Chicago or Brown vs. Berkeley or McGill.</p>