I found out about Caldera Forms by accident and I am so glad that I did.
Definitely the best WordPress Plugin out there. In the free version, you get so much and most probably the same functionality I paid for over at Gravity Forms. I had paid for Gravity Forms and still had about 6 months left on my annual subscriptions but once I learnt about Caldera and Started to use it, I dropped GF like a hat.
Customer service is great too! I am definitely considering a paid package. I am sure I will not be disappointed.