Functionality
as joomla, keep you solution with the best free openstreetmap in your website and add all pins you need.
Ease of use
few options so it is very easy to implement. Available in german, english and in french too with ma translation.
Support
Just contact Martin or me. For french, you can connect to
http://www.touticphoto.fr/web-cms/
Documentation
included in the modul. Short but it so easy to use!