This is by far the best Joomla extension for custom and dynamic contact forms. I tried a lot of extensions before purchasing the commercial version from Crosstec. I am very happy with the purchase. Thank you for providing such a flexible way to create complex contact forms! Features that I love: flexible layouts (sections, sub-sections), dynamic display of fields based on specific values of others, capability to save the form data into specific tables/fields (in combination with another extension provided for free), multi-page contact forms, library with plenty of validations, captcha.