Like everything else, it varies according to how much money you're willing to spend. The more expensive ones offer some of the safest living in Argentina, with essentially a similar lifestyle to affluent US neighborhoods (think children biking around and dropping their bikes wherever). Just like in the US, you get to deal with well-meaning but overbearing HOAs with varying level of dysfunction and bureacracy.
Tigre, Pilar and certain areas of Ezeiza are known for having the best ones.
As you get farther away and look for cheaper options, you will find barrios in different stages of development, with less money to spend on security and amenities, and in some cases outright broke but shuffling along in a zombie-like existence.
In most cases, due to bureaucracy and zoning issues, you don't get the luxury of a deed in your name for your troubles and will essentially hold a private contract with the developer stating that you are entitled to the land. This has been going on for long enough that as long as it's all well documented I wouldn't worry too much about it, unless you have the misfortune of buying into a project that is essentially going broke, in which case lol, good luck to you.
It is very much a caveat emptor situation so I would definitely take my time and do the research before buying into something. Run background checks on the developers, sellers, talk to your future neighbors, if possible, etc.
Good luck!