By far the best Form Builder in the market. Not only this is a very intuitive and plenty of options builder, but it also has a great documentation and a top notch Technical Support. My clients are very happy with the service I deliver, mostly thanks to Formidable Forms.
After spending countless hours customizing forms in WordPress for our clients, Formidable Pro is a breath of fresh air. It merges high level customization with extreme ease of use. I would recommend Formidable Pro to anyone looking to create forms in WordPress!