South America Help

I plan on spending some time in either San Jose, Costa Rica - Cartagena, Colombia - Buenos Aires, Argentina.

I will be taking intensive spanish courses and it seems most of the programs are comparable. I was wondering if anyone could tell me which city has the best night life and t-girls

I have never been to Cartagena, but between the other two: Buenos Aires by far!!!!

http://www.distintas.com.ar/catalogo/Buenos%20Aires

here's a selection from Colombia
http://www.distintas.com.ar/catalogo/pais/Colombia

Costa Rica...not so much.