I'm using this extension since about 6 months and I have to say it's very great. It is easy to install and use.
This is one of the first really professional components I installed and I've even bougth many commercial components. It is a very good directory and the support is really great.
The templates providing a lot of flexibility and make it possible to customize the directory and adapt it to your needs. Templates are easy to tweak with even basic HTML/PHP knowledge and the documentation for the templates on the homepage is very clear and provide many examples.I'm missing only the templates for the categories self and I really hope that it will be implemented soon. The best in this component are the custom fields. You can define so many fields as you need and since there is also template for the add entry form it is possible to use this directory for almost all. This product is first class.
Very easy to configure and works like a charm.