I have been using CB since 1 year. This component is Superb! I used it to create a dating site, a corporate intranet & now the community for a sport steam.
It is really a very good product to build complex communities. It is very Flexible and easy to install
There are endless possibilities that also shows in countless other components that include "CB integration".
I used many of the Form Building components for Joomla but it is RSForms Pro is the best Pro.
I understand & learn it is very easily. It is also very flexible, and well coded. I am using RSFormsPro for a number of years.
It helped me greatly.
I recommend everyone to try RSForms.