Probably the best Joomla component out there.
Incredible support, tremendous extended functionality added to normal Joomla articles and category. Possibly the most important thing though, they actually listen to user input. New features are added on an almost weekly basis with release candidates being made available for download on their Google Code page.
Support is amazing as well. The developers answer ALL support questions within 2 hours. These developers really do care about their product and it shows in leaps and bounds.
I cannot recommend this highly enough. If you want to add increased functionality to your normal Joomla articles, then this is the only component you will ever need! 5/5!