What is your favorite solution for managing database migrations in django? [closed]

I quite like Rails' database migration management system. It is not 100% perfect, but it does the trick. Django does not ship with such a database migration system (yet?) but there are a number of open source projects to do just that, such as django-evolution and south for example.

So I am wondering, what database migration management solution for django do you prefer? (one option per answer please)

How does Django keep track of migrations?

Django keeps track of applied migrations in the Django migrations table. Django migrations consist of plain Python files containing a Migration class. Django knows which changes to perform from the operations list in the Migration classes. Django compares your models to a project state it builds from the migrations.

I've been using South, but Migratory looks promising as well.