WS Forms should be far more well-known amongst WordPress forms!!
I have broad experience working with a number of forms and I was blown when I discovered the feature set available with WS Forms. From complex Woo products to simple file uploaders it has met every challenge.
I have only been required to use support once, I dealt with a gentleman called Mark and I cannot rate his efforts highly enough.
WS Form is now part of every website build at the company I work for.
If you need more than a simple form, this is the best plugin to use in my opinion.