Neither is famous for Economics.
And is it a undergrad or graduate program?
Since neither is super good at econ, so it depends where do you want to study. Do you like Washington more Cali more.
I would say more HK people have heard of UC schools (like UCLA, UC Berkeley, UC Davis etc).
And San Diego is really a nice city.
If you are looking for good undergrad econ programs, here is the list:
GROUP I:
Harvard University
Massachusetts Institute of Technology
Princeton University
Stanford University
University of California-Berkeley
University of Chicago
GROUP II:
Columbia University
Northwestern University
University of California-Los Angeles
University of Michigan-Ann Arbor
University of Pennsylvania
University of Wisconsin-Madison
Yale University
GROUP III:
Brown University
Carnegie Mellon University
Cornell University
Duke University
New York University
University of Minnesota-Twin Cities
University of Rochester
University of Texas-Austin
University of Virginia
Excellent LAC Economics programs:
Amherst College
Barnard College (Women's college)
Bowdoin College
Claremont McKenna College (#1 among LACs in Economics)
Colgate College
Grinnell College
Hamilton College
Haverford College
Macalester College
Middlebury College
Pomona College
Swarthmore College
Wesleyan University
Williams College