Functionality
You can create many different things, like tabs, slider etc. It also offers a lot of options to adjust the looks and feel.
Ease of use
It is a matter of minutes to create a basic element. In 30 minutes, you are already an expert to use the impressive available options.
Support
A very intuitive product, very easy to use, i did not need any support.
Documentation
There are a lot of how-to documents, however as i wrote above the product is so intuitive that is not necessary, they are available anyway.