I have used RSform for several years and just upgraded to RSform Pro. I use it to provide online registration for a camp. I needed more control over the input fields and custom verifications. Upgrading to the pro version has provided everything I was looking for. There is a library of scripts in the documentation for custom scripting. The forums are also very helpful for custom scripting. The real selling point though is the customer support. Being a scripting novice I needed extra help with a script and once I submitted a ticket it was answered overnight. This is an excellent program with excellent support!