This truly is advanced forms. Add-on has multiple options, I don't know what options aren't included in it. You can post forms as threads, posts, conversations ... Impressed, really.
Options are complex, maybe need some time to get used to it, but after that, you can make almost any kind of form to suit your needs.
An example form that's included is also very helpful to get started.
I definitely recommend this add-on, a developer is also very responsive and supportive.