I'm not sure about Emory, but I don't think there is a question that you should pass up UWisconsin. I think either Emory or Tulane will give you much better positioning after school than UWisconsin nationally at least, and being a native of New Orleans, I can attest that New Orleans is very diverse and cosmpolitan, especially compared to Madison (I imagine). As far as rankings go, a school can change over 10 rankings in one year, so I wouldn't stake a choice based on that fact unless you are dealing either with a top 10 school or a 2nd/3rd tier school, which you aren't in any case.
As for placement, the other posts are correct in stating that a very large number of Tulane grads go to NY/NJ and California. The starting private sector salary for Tulane is $100,000- I'm sure Emory is relatively similar.
Also the weather is a lot more hospitable in both Atlanta and New Orleans. Hope this helps-