Formidable has the most features, is easy to use and easy to extend. I have added functions to functions.php file from the Formidable documentation and they just work. Very professional. And they keep adding features to make it better. I trust this developer and there are many Wordpress plugin developers that I do not trust.

There's so much to like: 1) Immensely flexible product - for all levels, but especially for more technically inclined, 2) The support is fantastic. Quick response times, very helpful with finding solutions...seem to really want to make sure they help as much as possible, 3) It works. A polished product has so much value in that I don't have to waste time figuring out if there's a bug or a mistake that I've made.

There is much to like about Formidable Forms. From the drag and drop interface to the many developer hooks for creating your own custom features, this tool suits the needs for absolute beginners to the most advanced developer and everyone in between. With Formidable, you can create posts and, If you have the Pro version, it integrates nicely with ACF. There's also an add-on that will allow you to build custom WooCommerce Forms. Other features include: Display Form Data with Views Multi Page Form with Progress Bar WordPress Front End Editor Create a Graph and Chart Form Data Cascading Lookup Fields Powerful Calculated Fields Conditional logic Formidable just works and works very well. The support team is highly responsive and the end users that volunteer on the community forum are gracious and wonderful.