I am trying to decide which part of the US I will move to...?

I will be finished my degree course in university in two years time. I am studying English literature and Spanish, and I plan on spending some time living in the US, before I go back home and do a TEFL course so I can go to Argentina to teach English as a foreign language (living in Argentina permanently is my long-term aim). It's a long way off but my parents are worriers, and they would prefer if I started planning well in advance before making such a massive move. I plan on spending about two years in the US, however I don't know which state would be best to live in. I think I would like to live in or near a city, but I'm very unsure about where to travel to, and I also need to work, obviously.

I'm just brainstorming at the moment, so I'd be very grateful if you guys could maybe give me a few helpful suggestions of some nice, fun places to live! Thanks!