I consider myself to be pretty "serious" about food, where ever I go.
That means I read a lot, study what is local and available, and do a lot of on the ground research (that means eating) where ever in the world I go.
I dont think you can be "serious" about food in Argentina, if you only go by anecdotal stories about what Miguel's cousins eat.
I dont go out and spend $500 pesos per person at the top gourmet restaurants in Buenos Aires, and I dont go to Million and order a 200 peso drink.
I think its perfectly possible to not spend a fortune, and still eat well in Buenos Aires- it takes some research, of course- reading websites like Pick up the Fork, going to the new organic and farmers markets, but there is a reward for doing it-
I have tasted wonderful artisan chimichurri, many new microbrews, fresh from the farm produce, meat, and dairy, and great cured meats and cheeses.
Its all out there to find, both buying ingredients and eating at restaurants, if you are "serious".
But its a lot easier to go to the corner bar, order a milanesa, and complain.
I have had some of the best meals of my life in Buenos Aires, and I have traveled a lot- my standards are high.
There was that one night, when we were the only couple there, a Moreneta de Montserrat, for dinner- it was incredible. The two owners met when they were both working at El Bulli, and they can really cook. Unfortunately, they dont do dinner anymore, but their simple, cheap, lunches are always sublime.
But there is a lot more out there, and more every month.