fully agree with kankai river. stanford is solid for most subfields in micro - i/o, game, financial, behavioral, experimental etc., particularly game theory. chicago, on the other hand, remains the bastion for old school supply siders. surviving the chicago prelims, i've heard is extremely difficult. they are known to enroll a shitload of eager beaver phd aspirants (who fall easy prey to the chicago appeal) and make life so difficult for them that they either fail or simply call it quits. the term "cut-throat competition" is fully operationalized here. stanford environment on the other hand is quite collegial and there is a decent amount of cooperation among students and faculty. congratulations if you've been admitted to both.