It's all a question of taste for sure. So I hate to contradict what people though was good. However, we went to La Vineria de Gualterio Bolivar and we were extremely disappointed. I won't say it was bad. It's just not up to standard for that type of cooking. This is an expensive high category restaurant and some of the dishes didn't even come out "right". In Europe/US these dishes "gone wrong" would not have been served. I think that is not acceptable for the standard, price and style they set themselves up at. It's a "molecular" restaurant. If you can't get the thing to work, there's a problem. Anyway, if it were cheaper (like 1/2 price!) I'd recommend it. At this price point, uhmm, no, not worth the money.
La Cabrera is still good in my opinion. But yes, the last time we went, there were only tourists there. So, if I were a tourist it won't go. But since I live here I don't mind. Last time we went we sat next to a table of really fun Brazilians. And as Ashley said you need to ask for the "hot" sides. I'm not sure that's a bad thing though. It really IS so much food that last time I went I just asked for the pure and not the whole thing set up. The cold one always come on the side. If they don't I think it's a mistake.
I also like Crizia, Cluny, Sete Bacco, Astrid y Gascon, Francesco, & Sarkis.
The ones on our list to try are Pura Tierra, Sirop, Thyme & Sucre. I'd like to go to Tegui. My husband went and said it was good. But not great. Any comments on those I'd love to hear.
Oh, and there is a small restaurant owned by a French guy. I won't say the food is "French" necessarily. I guess it "Med" . But it was really yummy. It's called A Nos Amour on Araoz & about Goritti.