You have rightly said that Stern, CBS, and Wharton are great for pursuing a career in Finance. For exactly understanding which school would be fit for you, you can do internet research. Do read about the qualities these schools look for in their students. Interact with the alumni of these schools. Read the interview and school-life experience of people who made it to these schools. Some people have shared their experience in gmatclub.
Also, you could go through the following link for interview and B-school experience from alumnus of those schools : http://www.interviewbay.com/interview-tips.php
Best of Luck!http://www.InterviewBay.com