I definitely think UNAM deserves credit for having a unique architecture and I would love it if it was in the older part of DF, which is quite nice. I'm giving their offer serious consideration after living in Europe for 6+ years as I think that Central/South America are going to start heavily investing in science/R&D, while it's on the decline in NA/Europe (austerity). Seoul and Singapore have recently undergone this transition and it would be nice be located in country when the transition happens. Plus, I like the sound of Spanish much better than German.