The forms extension makes it easy to create many types of useful forms, validate data entry, store form data in the database and access/export it, send confirmational emails to the admin and to the user, etc. The forms display very nicely by default. The template facility makes it easy to create form segments that can be reused in multiple forms - really a time saver!
Support team was very helpful to me, answering my questions in a timely manner. My client had some unique forms requirements and support helped me create the forms my client requested.