Fantastic tool, fantastic support.
This is one of the coolest things I've ever worked with. Easy to use (lots of options, so be patient with yourself). To compensate for the (good) complexity, they have lots of short videos on each element, and if you can't find the answer in the videos, they have freaky fast support through chat. Seriously -- one of my questions got answered moments after I typed the question. Almost spooky. :-) Check these guys out!