I am asking for recommendations for which Wordpress plugins you would recommend for collecting information from website users. This is for creating a form to get volunteers name, address, email address, and what type of volunteering they would be willing to do. Some may also chose to donate instead of doing something. I am looking for something that is easy to learn. I have tried contact forms7, visual forms pro, formidable forms, gravity forms, and grunion and contact form by webdorado (which looks the most promising). Most of these have free versions which don't have all the options I need. So before I spend too much time learning a particular one I wanted to get the experts views on what they recommend I invest my time and money into. Thanks.