I live outside the capital, in the province, in Avellaneda - VERY different from the capital, but only 30 minutes away on the collectivo. Doesn't have the night life or bars that the tourist/ex-pat areas have, but has a few decent restaurants, nobody speaks English (OK, a few actually do), but the people here are brilliant, they smile, have time for you, and are not looking to rob you every second. There are also many gyms, I attend the Racing one, good facilities, if a little worn decorations....
And the great plus thing - Around a quater of the price of the capital for property.