I´ve had several close friends of mine buy departamentos de pozo. All except one of them had favorable results, although none were completed exactly on time, a few months of delays to be able to move in, construction quality so-so and sometimes downright shoddy, but all in all the apartments were completed and they did get their final deeds. The one that did not, had bad luck that went on for several years, the project was shut down mid-point by government inspectors, then builder declared bankruptcy, etc. Ultimately the project was sold to another builder, however the original investors were given the option to back out, but had their money returned to them (in pesos) which almost 3 years after the fact, were worth much less than when they paid in to the project. The best thing to do to judge quality is to visit several projects that the builder has already completed and are occupied, to get an idea of what their standards are. And more importantly a VERY GOOD escribano to assess the terms of the fideocomiso, as these projects are called and protect your interests. If you need the name of a good escribano, I can send you one. Good luck.