Property for sure. Most of you could only dream about living in some of the others "world class cities" out there (NYC, Paris, etc, ok, you could do it in Berlin). Still you can afford a nice place in BA. And if any American that is not from NYC or San Francisco have anything to say about BA not being a world-class city, well, your "Springfield, Flyover State" hometown is still awaiting for your return.
Now, somebody asked if we are better than 5 years ago. Sure dude! I earn in pesos and I got raises to match inflation year after year. Now I am independent, and my potential income for the next year will triple my current one, just because the economy is booming and locals are buying stuff. If you own property, your wealth has also increased a lot. If you are a scientist, a teacher, or poor, now you can do science without leaving the country, teach with dignity, and eat for a change
Of course, if I was an expat earning in USD with a fixed income I would be also remembering the old good times of 3 dollar-steaks.